Kaan

I disabled the WP fastest cache, Loginizer, and Autoptimize plugins. The result is still the same.

These are the values:

php_value upload_max_filesize 512M
php_value post_max_size 512M
php_value memory_limit 512M
php_value max_file_uploads 128M

I contacted my hosting provider and they double-checked everything. Looks like this problem is about Tutor LMS

Thanks for the reply.

I need for the student page. This is for instructor page.

I solved the issue by removing the button with the code below (in case anyone need it) but still would be great if you could tell me the code for student page too.

Thanks.

The code I used to remove the button:

.tutor-submenu-login-btn {
display: none;
width: 0;
margin: 0;
padding: 0;
}