After purchasing the product, I activated the Appsumo code, but something must have gone wrong. The profile created on the website https://www.promptengine.cc/ was not activated with the paid version, but only with the free version (limited to a few prompts). I sent several emails to APPSUMO and to the program's support email address of Prompt Engine. After a few days, APPSUMO replied and told me that the activation had to be done by the Prompt Engine company, and that they would contact them to resolve the issue (the same company was also the recipient of the emails I sent to APPSUMO, so they must have already been aware of the problem, but they never contacted me). After several replies from APPSUMO asking for my authorization to provide my data to the Prompt Engine company, there was no further response. I sent several more reminder emails to both, but there was complete silence. Moreover, the free version often crashes. I don't know if this is because it is the free version (but it shouldn't be the case even with this version).