m0useanswered grow question a year ago Depends on the contest.
Some of the reoccurring ones you can only enter it once: see list below.
DOTM has to be harvested and complete. Can only be enrolled in that contest once before it is locked out of other future DOTM contests.
POTM can enter as many times as you want, might need to pick a new photo every time if you win.
GOTM does not matter diaries are not part of this contest
MOTM needs new memes every month and normally has to be on a fast buds diary or the meme is about fast buds.
NOTM this contest no longer exists but like just like DOTM but for new users only, they scrapped this contest as trolls would create fake accounts and other gurus and grand masters would be winning it as there was some errors in the enrolment criteria. They knew what they where doing but decided to be pricks and say they did not know.
Other non reoccurring contests "like seedsman best outdoor and fastbuds best fastflower" all depend on the rules laid out in the contest, Sometimes they mess it up and diaries that should be allowed are not. Just need to reach out to the host or ask if anyone else is having any issuing joining that contest in question. Most of the time it is because users did not read the fine print on the rules.
what contest are you trying to enroll in? Send a DM.
Good Luck!