"Please let us know if there are any problems!" This approach is wrong. I would rather know under what conditions you tested this product. What version of core, what version of php, what version of databases and webserver version node js etc. It should be written there in the product details. I wonder how you sell a product in which none of these things are written? Or maybe we have to guess or do you assume that we will test all the versions and then post our failures and successes here?