hello, i used corejoomlaquiz.

1st problem on my test-site 

1/ everything was working on front end

2/but today , the message "please wait" still stay on screen on front end

3/ you have said in forum that it could be a ajax conflict

4/i have update joomla in 3.8.1

5/i send u a message with login

2nd problem on my production site

1/ i cannot modify question

question are with HTML

question have been imported by super-user

if i try to modify in back-end then, i have the message "please wait"

i have turn-off editor mode but the change is not saved

joomla is 3.7.2