The deity tool was designed as a player's aid so they can verify if the alignment and deity combinations will be acceptable for any divine classes they choose to play, or will select later as a multi-classed character per the server rules. That said, I'm not even entirely sure that the tool is functioning properly at this time, but maybe someone else can verify a valid response from it. Either way, it does not affect playability in the mod, and if found to be inoperative, then it just might be removed altogether.