We have had several instances recently where members have entered a competition and not confirmed their entry.
Once you choose your competition, choose your entry, give it a title if needed and then click upload, you are presented with a second screen where you get to CONFIRM your entry. This gives you a chance to correct any errors, like wrong photo, wrong competition etc. This second confirmation screen is a check-point to allow the entrant to review their entry before confirming. By clicking confirm you are submitting your entry to the competition. BUT we have seen several instances where members are not confirming their entry at this point.
If you do not CONFIRM your entry it will not be included as a valid entry into the competition.