Can't login on 1.21.4
I logged in right now. There's a video on https://sovereigncraft.com that will specifically show you the economy features. We're real lightning throughout. Every in game tx is a real tx behind the scene. LNAddress: player@sovereigncraft.com is seamless and automatic on join. IN game QR for interaction and mobile wallet sync for your in game wallet as well. We even have bolt cards that can work with your in game wallet. https://geyser.fund/project/sovereigncraft
Vote for sats and break even with some in game commands like teleport and a few other conveniences. Land is the only thing I sell directly, the rest is P2P V4V. there is a small spread on the auction house, chest shops and the item exchange (which works like a commodity exchange complete with limit and market buy and sell orders.
Discussion
I'm in right now with 1.21.4.
use sovereignnode.io as the server name not sovereigncraft.com if that's your issue. Microsoft did a dns block on sovereigncraft
a valid Minecraft account is required as well. I'm in with the vanilla client. We also have people that sometimes use lunar. We technically run 1.20.4 but the newest client should work on both java and bedrock. Java experience is better and has a few perks like NIP-05, LNaddress etc.
Hmmm that's odd, just tried both but getting the following error.

is it a valid Minecraft/Microsoft account?
If it is a cracked launcher or account, I do not support that because the authentication itself is used to generate the wallet and access strings and I don't want to risk spoofing.
Ok so that's why, sounds like its time to get an official account after 10 years haha
I'm going out to a Bitcoin meetup soon. I'll try to keep an eye on messages. there's a link to our discord as well from the website if you want to chat with others.