Muun isn't a good LN wallet. Here are much better options: nostr:nevent1qqs9gqumceu5kwss6z5vstm94h39q9sj2x9jx2hdcvj8fueq7uuhyfgpz3mhxue69uhhyetvv9ujuerpd46hxtnfdupzquhj9h4s3ktk0sjs4243j70tk3h2agyvsmv6cnzeu3m0dp29l2q6qvzqqqqqqy3pwkgm