Hello. Thanks for the test. You are Megalithic.me, correct? I was really helped by your documentation when setting up the node initially, so it's good to hear from you. Anyway, since the server hosting my Lightning address is run by an amateur, the connection is a bit unstable. It was turned off and on again yesterday while some work was being done. It's strange because by the time you replied, the work should have been finished. I tested sending from my separate wallet just now, and it did go through. However, this has happened before. For example, transfers to my address from Wallet of Satoshi didn't work. I don't know the reason. When I inquired with them, I received a response suggesting it might be because my server supports too limited TLS options, but looking at my Nginx configuration, that doesn't seem to be the case. Anyway, it's a mystery. I'm starting to think it might be best to just leave the operation to a professional, as you advised. I plan to do so if I see a few more failures.