Move To New Server And Update To 4.13.3

hi all

hope somebody will help me

installed version is : 4.13.3 ultimate

after move to new server and update to latest version 4.13.3 when i try to edit some of the details of a product i get the message

Server Error
403
Forbidden

You do not have permission to access this document.

after the move of the installtion i saw that the dashboard was slower somehow ..

is anything that i can try to solve this issue ?

thank you

Hello

Please show phpinfo.

Best regards

Robert