Sorry about the confusion.
– The versions are only 7.9 and 7.9 nightly when you select them. You do not need to manually enter a URL, it’s inserted when you select.
– The player is „Squeezelite“ in the Audioplayer menu. If it’s running it shows up on the LMS in the top right corner under the name of your Max2Play device.
– The activation does not require entering any credentials. Just use the Spotify app on your phone or tablet, select the player with the name of your Max2Play device and the LMS has authenticated your premium account and can now run Spotify on all players.
– You just need to deactivate the other Spotify plugins.