Cannot change filesize above 2MB

Issues with the server, hosted on a raspberry pi 2, it will not let me change the max upload file size above 2MB, I have changed the necessary files to allow it to accept larger files, it just doesn't apply the settings.

"File handling

Maximum upload size 2 MB (max. possible: 2 GB) Save
With PHP-FPM it might take 5 minutes for changes to be applied."

Changing the max size and clicking 'save'

"File handling

Maximum upload size 2 GB (max. possible: 2 GB) Save
With PHP-FPM it might take 5 minutes for changes to be applied."

As far as I know this means it has saved the setting, this however doesn't happen. I also have waited for several hours for the "up to 5 minutes" to take effect, which it does not.

Im trying to upload a powerpoint with a size of 3.6MB, I have tried changing the max size to something like 4MB still to no avail.

I didn't change the settings between the screenshot and text. Please advise

You probably have to look into the documentation on how to configure your server correctly: https://doc.owncloud.org/server/latest/admin_manual/configuration/files/big_file_upload_configuration.html

I have changed the limits in the .user.ini file, still not saving the settings via the web gui