Error Access Denied: Possible Csrf Attack (Again)

Recently migrated to a new host/server. When trying to save an option with a lot of variants I get the Csrf message. I have tried all the stuff suggested in other posts concerning this. I have even done these suggestions in the past since I have 100 global options and many of them are over 100 variants deep. And the increases normally fix the issue. But nothing is working this time.

Settings were:

upload_max_filesize = 128M

post_max_size = 128M

max_input_vars = 1000;

I have tried several variants all the way up to:

upload_max_filesize = 1024M

post_max_size = 1024M

max_input_vars = 10000;

Variants on my old server that were working fine:

I have tried several variants all the way up to:

upload_max_filesize = 100M

post_max_size = 100M

max_input_vars = 10000;

Since I still have access to my old WHM I went into the MultiPHP INI Editor and made sure everything was the same (using codecompare). Even after saving the settings as the same ( oddly max_input_vars was commented out on the new server) I still get the error.

But nothing is fixing it. Any suggestions?