Recording on a Dreamlink/Formuler is really downloading, you're saving the ts stream from the provider without recompressing it. Unfortunately only working on live streams with my T1 plus. Attempting to use it with catchup does nothing except blinking the light on the front of the box while I'm pressing the REC button on the remote.

If you can get hold of a copy of the XC API Documentation you can easily interrogate your provider's server to get URLs of everything on catchup (assuming they are using XC catchup)

What's your provider?

2 weeks!? how much is it a month

You can do it via IPTV Extreme Pro or

http://server:port/streaming/timeshift.php?username=xxx&password=xxx&stream=xxx&start=2020-01-14:19-58&duration=5