Nostr Web Client

They completely shut down their coordinator. There are however a few good ones that you can use and they are working just fine.

Check on their reddit, I can't remember the name.

Good to know. I have tried @jam which seemed to work quite well but took months to coin join so patience is required here

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There you go

I use coinjoin.kruw.io

More here

If you set a high enough fee it will work within a couple of hours