Hi!
I just replaced all files and DB with older backup. Now it works fine just like before. Maybe is caused by the new woocommerce update (Fix – Use relative scheme for AJAX endpoint to avoid errors when using a mix of HTTP and HTTPS.)
For some reason, at my first attempt of restoring older files and DB, after updating woocommerce (3.3.4) and pdf invoice builder (1.2.1) I got a blank site and I had to deactivate plugins using phpMyAdmin again. Now I did it again (restore files and DB and update woocommerce and pdf invoice builder, it just works fine.
Do you still need further information for investigation?
Best regards,
Martin
