wordpress not saving form code in code editor

Embedding PayPal code into the text editor is always a little risky due to the layout of html elements ‘PayPal style’ vs the layout of html elements ‘WordPress content style’… both are trying to ‘think’ for you a little bit to make your life easier, but as a result the formatting can go whacky.

As I’m sure many others have answered previously, it’s best to insert this into your theme templates. eg. page.php or single.php etc, to maintain a tighter control on the display.