Apologies to necro this, but just had the same problem this morning. Haven't really used the board much before, but in addition to giglet13's post above - this will still use real fixtures for the first season. In his screenshot, if you click on the item above in the list (League fixtures) and remove any existing fixture list, it should get around this problem.
number of teams in Sky Bet league two (24) doesn't match up with number of teams in the real fixtures (8)
in Advanced Rules Editing
Posted
Apologies to necro this, but just had the same problem this morning. Haven't really used the board much before, but in addition to giglet13's post above - this will still use real fixtures for the first season. In his screenshot, if you click on the item above in the list (League fixtures) and remove any existing fixture list, it should get around this problem.