The Star counter on the League page shows how many Stars you have collected while a part of that Club during that season. This is why it appears as 0 right after joining.
(Leaving a club will return your season Stars to 0, even if you rejoin the same Club later.)
Your lifetime Stars are not affected at all. You can confirm this by exiting the League page and completing a level. Your lifetime Stars will be shown in the top, right-hand corner.
(Leaving a club will return your season Stars to 0, even if you rejoin the same Club later.)
Your lifetime Stars are not affected at all. You can confirm this by exiting the League page and completing a level. Your lifetime Stars will be shown in the top, right-hand corner.