Dunno what you do, normally it should work. If it's not teleporting back to town after event finish, then the saved location is null, looks like and so, the return is executed. Put teleport to town instead, if loc is dummy.
Btw, stop multiposting.
You don't have to create any new map or store to db (bleeh). There is something like getSavedLocation on acis. You can find the usage over Olympiad system.
store
player.getSavedLocation().set(player.getPosition());
retrieve
final Location loc = player.getSavedLocation();
if (loc.equals(Location.DUMMY_LOC))
return;
player.teleToLocation(loc, 0);
player.getSavedLocation().clean();
A friend of mine recently tested Mobius pack and instantly noticed few bugs. It's not as perfect as you think. Even tho, he fixed some of his reports, but still.
Personally, I guess, I would go with sunrise rather than Mobius.
Answer is no. Even if he make you the command, THEN, you need to create bypasses to handle everything.
If you don't understand, read till you do. If you can't, simply skip the idea, don't add new commands. Once you learn, you add them.
Answer was/is legit. Atm monsters with 'no-seal-stones-period' are spawned. You have to edit the spawnlist aka switch IDs. So yeah, that would take some time to find mobs and switch their IDs. You could eventually take some other spawnlist, like frozen one or so, adjust it to fit the structure and execute.
Find mobs IDs range and switch them. No easy way, I would say.
Error is clear and you could Google it. Number format exception, your config is "10." while it's supposed to be an int and not a double. So, remove the dot, it must be "10".
Search for the message over the sources, find the check and remove it. Most likely someone blocked it. Otherwise, you should consider changing the pack.
If you are using H5, handlers are inside datapack as far as I remember, so set proper Java version for datapack as well. Recompile everything(!) anew and switch files. Not only GS. Try that.