Visual Composer not Saving

Hi!

I have following problem:

Visual Composer is not saving anymore in the backend menu.

It was saving before untill this morning. I cant edit anthing with it anymore.

I installed a bestseller Plugin from themeforest and added the custom code yesterday. It worked several times.

I have disabled all unnecessary plugins, activated only the neccessary ones.

I have everything at newest version updated.

I already made sure, that in my user profile the checkbox with wysiwyg is unchecked.

still not working… 🙁

btw, my site is bocked with plugin, so my customers cant see the unfinished relaunch.

i can provide access if you need.

Best regards!

Please help, its for my business site – relaunch, and i dont want to drop my rankings in google… :/