I have just installed Moodle 3.1.2 and I am having trouble getting the recycle bin turned on. When I go to https://mysite.org/admin, the new settings Recycle Bin page is shown but I can not update it. It shows that they Recycling Bin is turned on.
But, if I go to Site Administration-Plugins-Admin tools - Recycle Bin, nothing is turned on and when I enable the recycle bin, and click the Save changes button, nothing gets saved. Here are the amounts that I put into the page, to be compared with the mdl_config_plugins figures below.
Notice that at the mdl_config_plugins table, the changes are being saved every time.
This same type of problem happened with me when I tried to update the Assignment file submission file size limit when I was using Moodle 3.0.4. It was being saved correctly in the database but not displaying or behaving correctly in the Moodle application. When I did the uprgrade to Moodle 3.1.2, that problem was fixed but now this one has popped up
Does anyone have any ideas what could be causing this and the solution?
Thanks!