unable to use slides anymore

I was able to update slides from the menu Easy Real Estate, but I am unable to modify them any more.
Whenever I try to save the changes, there are no errors, in the meantime, my changes are not saved either.
It is strange.

At one time, the system asked me for the purchase verification code, then I went to the Envato site to get my code and enter the code.

I realized that my don’t have an active support anymore but whatever worked before should continue to work.