Problem with the blocks editor

Recently I found that some of the apps I developed before not working one by one.

Some of it suddenly not loading and blocks for screen one. Some of it cannot load or need a lot time to load or the block editor became very very slow that it’s not work for edit this app again. Would you please help and advise the problem with.

We are talking about it here:

But someone says that it is a problem from our side, browser, internet connection, etc. but I think that a problem from kodular side because I use always the same connection and browser and the problem appeared when I passed to premium in the last update.