Very bad experience

I had the free version and it worked well for a few years. Then one day, to my surprise, I discovered that almost all the images (thousands!) had disappeared from the site. They have physically disappeared from the site! After hours of absolute panic, I investigated for several days to understand what the cause could be. Only by chance did I discover by Googling that other desperate people had had the same problem and the cause was Optimole. In fact, there is a plugin setting (which many do not notice among the many possible ones), which transfers all the images to the Optimole server, deleting them from the site. When an “over quota” occurred, Optimole blocked the account and therefore all images became invisible. At that point it seemed like the only way to fix the problem was to pay for a subscription.

Upon further investigation, I discovered that there was an option in the settings to transfer images back from Optimole to the site. The operation was successful, but it was a bad experience with days of worry and depression over having lost years of work.

I believe it would have been more honest and transparent for Optimole to clearly inform the user that the quota was exceeded before lowering the guillotine on the images, and in any case return the site to its previous state (the pages in fact had links pointing to Optimole, so none of them worked).
In short, it seemed like a terrible ploy to force people to use the paid version, taking advantage of the fact that less experienced people wouldn’t be able to understand and solve the problem without having to pay. Once I recovered the site and images with the expected procedure, I deleted Optimole.