Recently we have upgraded owr own-cloud server to latest stable version 9.1.0. and now we are not able to update "Maximum upload size ". When we update it to any value it shows that value but after reload the page it came back to default which is 2 MB.
I have made all required changes in the php.ini file.
A really good starting point would be to fill out the shown issue template when creating a thread instead of deleting it. Up to know no info about your environment is provided...