Conditional Content Linked to Cookie Value Only Shows on 2nd Page Load

Since you are relying on the URL parameter to set cookies, why not prioritize it over the cookie for the first page load?

At your second code block, changing the line $plan_cookie to this might help.

$plan_cookie = isset($_GET['plan']) && !empty($_GET['plan']) ? $_GET['plan'] : (isset($_COOKIE['plan']) ? sanitize_text_field($_COOKIE['plan']) : '');

Related Posts:

  1. Set A Cookie To URL Parameter, Pass Cookie From Page To Page To Alter Post
  2. Why “?v=hash” is added to my URLs? [closed]
  3. use query string in URL to display content on the page
  4. Pulling a parameter out of the URL of a WP link without “?” or being sent to a different page
  5. Dynamically change page title from URL param
  6. 404 error when passing “cat” parameter to URL
  7. Check if user is logged in to site A when visiting site B
  8. How to add URL-Parameter for Javascript Widgets?
  9. HTTP 403 Error when passing parameters to URL
  10. WordPress get parameter ‘unapproved’ and ‘moderation-hash’
  11. How to parse a custom url (within WP site) and obtain params passed to that URL
  12. Passing values through url for checkbox fields with same name to get?
  13. Custom HTML title based on URL parameter
  14. How to get a page url segment on wordpress?
  15. Different url to same page (with dynamic content)
  16. Add a paramter to page url
  17. Why “?v=hash” is added to my URLs? [closed]
  18. Add more than one query parameter onto wordpress url
  19. Use URL parameter to create dynamic content
  20. Pass post title as URL parameter
  21. Let WordPress to go opening an external URL
  22. How to pass parameters thru URL?
  23. Duplicate pages with ?s parameter
  24. How to use query string in URL to display content on the wordpress page
  25. help me remove this additional parameter in url
  26. How do you retrieve a post by slug name through REST API?
  27. Detecting a WordPress URL without doing a full HTTP GET?
  28. How does WordPress generate URL slugs?
  29. How does routing on wordpress work?
  30. Redirecting to old domain after migration
  31. Custom plugin route in WordPress
  32. Why is ?doing_wp_cron being appended to my URLs
  33. Unwanted media library URLs in posts?
  34. How to remove file versions from the file source links in wp_head?
  35. Change default URL path (/blog/) of blog posts
  36. Difference between esc_url() and esc_url_raw()
  37. How to deal with WordPress on localhost
  38. Problem with guids and absolute links
  39. How to convert the file path to a URL of the same file?
  40. Add menu and submenu in admin with a URL instead of slug?
  41. Update media file url in wordpress media library
  42. Why is WordPress saving full-urls to the database?
  43. Get taxonomy slug from url
  44. Load images with http urls inside https post
  45. Remove All Query Arg
  46. Open WordPress ‘Add New Post’ admin page with parameters set via $_GET
  47. How to remove /index.php/ from URL’s
  48. Run WordPress frontend and backend in different domains
  49. How to set global variable in functions.php
  50. Force the Website URL to Include “www” and to be Upper Case?
  51. Why does WordPress automatically redirect URLs with the parameter “name=” to a different page?
  52. How to remove “http://” When Echoing URL?
  53. Change logo url link
  54. WordPress and $_GET Params
  55. Can’t login after my site was moved to a new server
  56. WPML Get url without outputting
  57. List of default WordPress URLs
  58. Why WP encodes UNICODE (UTF8) containing urls? Any drawbacks of UNICODE url?
  59. Adding a hook to ‘parse_request’ so that siteurl/pagename/xyz ignores “xyz”
  60. How to have numeric URLs in Posts and Pages
  61. Unable to load static front page on home url
  62. Force home page to be https?
  63. Why WordPress automatically removes http from the url of my website’s sub domain?
  64. add_query_arg() One Key with multiple values
  65. Weird: /?name in URL leads to blog
  66. I am Looking to append URL Parameter to all URLs
  67. How do I amend the fixed “author” part in the URL?
  68. WordPress Move to SSL How to Update Media Assets to HTTPS?
  69. Dynamic URL generates dynamic content
  70. Moving wp-content outside of web root?
  71. Pages redirected to attachment post
  72. Generate one time URL
  73. In Settings>>General I am missing some fields
  74. Change homepage url
  75. Detecting $_GET parameters from any page + Cookie
  76. As soon as I add a custom query_var using the filter, my pages point to an archive page – why?
  77. Is dynamic URL possible in WordPress
  78. Adding target and _blank as it’s value to the allowedtags
  79. How to update media links in WordPress after migration?
  80. permalink for category pages and posts
  81. Accessing the Current URL in a Text Widget for a Facebook Share Button?
  82. Is ‘name’ a reserved word in URL’s?
  83. get_site_url is not returning anything?
  84. Check what is at URI (post, archive, etc…)
  85. Get url from file uploaded in Media Library
  86. How to create a custom page base on URL for WordPress?
  87. How to make menu items active based on hash
  88. Use image url with add_image_size
  89. Multiple domain names for one site
  90. How to always rewrite author archive page URL even if the author does not have a post
  91. How can I change all links on pages to point to a different domain from where the site is hosted?
  92. Best way of removing emoji support from url / slug only
  93. Allow UTF-8 characters in the user slug part of URL
  94. WordPress converting ../url to http://../url
  95. Password protected page Hash url
  96. Which of WordPress’s .php files need to be directly accessible via HTTP?
  97. Remove site root trailing slash
  98. home_url(); showing current page instead of site address
  99. Why ids in urls don’t work but slugs do?
  100. URL parsing – what is it?
Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)