How to make auto print from folder on android?

Question

Android

Please help me find an android program that will automatically print files from a folder.

Why do I need it?
In general, I need to print from an android tablet from an RDP session to a WiFi printer that is on the same local network as the tablet. There is nothing else on this network, only a 4G router, a tablet and a printer - this is a vending machine. Forwarding printers in android clients does not work. The best I have found is terminalworks.com. But firstly, it does not work on Android 11 yet, and secondly, it costs $79 per user. And it works very simply - on the pdf server the printer puts the file in a folder, on the client it prints from the folder. And for a team of 10 people, it turns out $ 790 for, in fact, a very simple function.

UPD: I even found out that automatic printing does not work for them. The question is removed.