Thank you very much for help. The problem has been resolved. Unfortunately, there are more – problems with the buttons to download the file (problem with https), difficulties in generating an invoice and its printing. Too many problems for me to realistically implement your plugin. I’m very sorry. I will still use the plugin, but only for handling free files. Graphically you have no competition and I like your plugin very much. The problem is that I need to hire a company to implement paid file support. I have to focus on the content of my vortal.