Can't create a new category

Hi, I can no longer create a new category. As soon as I click on "save" I'll get back to the same page without my former input. A click on "close" leads again to the same page with empty fields. Our server reports no error. Our site has about 1.100 Users and thousands of access-rigths, that might be a bit special. How can we solve that problem? Thanks for your help in advance!

Best regards
Stefan Münster

Hi Stefan,
When you have a lot of user groups, we will have the trouble when submitting form with a lot of fields. In this case, you should contact with hosting admin to increase value of PHP variables: max_input_vars as much as possible, and we hope the form can be submitted well.
Thanks
Dam

Hi Dam, thanks a lot, that solved the problem!
Stefan