In the guide about LNbits I wrote in the Guides section of this forum I explained that if you use Umbrel LNbits, it will be always working behind Tor.
That means, when you create the LNurl and when you scan it, you must be using the Tor network on both sides.
Open the LNbits wallet page, using Tor onion address, then click on show or create the lnurl link. It will create an onion link, not clearnet.
Phoenix it doesn’t support lnurl behind Tor.
Bluewallet - yes it works, but you need to use it with Orbot.
Zeus, is canning perfectly but again, should be behind Tor.
SBW works if you activate Tor.
Muun, it doesn’t full support lnurl
Strike - don’t know
Blixt, yes is fully supporting lnurl, but again only if you activate Tor.
If you do not want to deal with accessing through Tor, there is a guide about how to use lnbits without Tor, but you will need to do some modifications in your node, so if you are not, comfortable with some command lines and stuff, you better don’t do it.