Players will be temporarily blocked from opening up additional competitions if they have 4 open entries open at one time:
This limit is in place to lessen the possibility of exposure to too many open competitions at one time. Players are encouraged to attempt to play their open entries by going to My Competitions. In general, the open entries should automatically close out by themselves within a few hours.
WorldWinner® Support does not have the ability to manually release or clear out open entries so you will need to allow some time for your open entries to close before entering a new competition.