I’m still not sure on the process you used, but here is what i suggest:
find out what plugin is using the social and re-install it.
TO AVOID WORDPRESS INTERACTIONS:
To avoid wordpress interaction and just make changes to the database, this is what i suggest:
start over with the process. (not completely necessary, you could try this from where you are right now. if it doesn’t work, then restart.)
Put a clean backed up version of the old domain onto the new. if you haven’t made any file changes besides the wp-config you can skip this. But you need to remove those lines you added before.
In your wp-config file just change db user, name, and pw to the right credentials to access your new database.
upload the sql of the old database into the new database.
You need to go into your new database and change the site url and home url to the new address. I suggest not doing this through phpmyadmin though as it will cause some problems as you’ve already seen or just by wp-config as you already tried.
Go get this tool: https://interconnectit.com/products/search-and-replace-for-wordpress-databases/
Upload it into your www/ folder. (I usually rename the search and replace folder to SRDB.)
now navigate to your new site with the SRDB at the end. (www.example.com/SRDB) and the top two lines you’ll see a search field and a replace field. (if you get a db connection error here, double check the wp-config to ensure that it has the right credentials for your NEW SITE/DB). In the search place your old site address:
tsjevicom.webhosting.be ( Is this your OLD address or new? put the old here)
in the replace field place your new url tsjevicom.webhosting.org (make sure you enter your new site here.
ONLY do this after ensuring you’re on your new url and that it’s loaded into your new database: and you still have a backup of your sql in case something accidentally goes wrong.
hit live live run. let it run it’s process
This should fix your problems! what it does is replace every instance/reference of your old site in the database to new one, including serialized data.