[serious issue] Premium version is breaking single product pages

Hi,

i am using the premium plugin for two of my sites (with two different licenses).

I am using it regularly and i am also adding the reviews on every single product description with a shortcode.
Some days ago i came across a weird issue. Some random single product pages couldn’t be loaded anymore.

When clicking on them, sometimes they show a error 500. Or they load for some minutes and then all is blank.
Or the product page is blank, only the top menu is shown. It does not happen with every product. But with MANY.

I deactivated all plugins i use to find the issue. After activating yours, the issue was there again.
I checked it on both sites – it’s your plugin.

I added the admin credentials in the advanced information tab and also links to some of the affected product pages.

NOTE: After logging in, you can first open the provided single product pages. They will work as usual.
After that, you can activate the premium plugin of yours and load the single product pages again. you will see that they won’t work.

NOTE 3: please directly after this deactivate your premium plugin, because these are online shops that are currently visited by many customers trying to order, so it cannot afford that the product pages won’t load, because the financial loss would be high

NOTE 4: Normally i added a shortcode to all single product pages to display the reviews of the customers. I had to remove it, because it does not show up without the premium version of your plugin. Nevertheless, the issue is not caused by the shortcode, because i already tested it by removing shortcode but leaving premium plugin active = single product page still broken.