It's got to be a hard balance to maintain - you start out posting a few pics of you in curlers with homemade cakes against a chintz backdrop, just for fun and to enhance the pretend play that you live in a 1940s toy town, minus the unpleasantness of war, the misery of rationing etc. Then suddenly you've got 50k followers, lots sending critical/helpful messages ('the design on your pinny wasn't created until 1954', 'do you have tv, you're hurting your kids' etc).
At that point a decision has to be made about direction, and the endorsements you'd need to make it profitable would mean compromising on actually being vintage. I can understand them thinking sod this, and shutting the account.
Alena seemed keen to be an influencer, so was more about trying to find a profitable audience so I can see why she wouldn't fit with the group, particularly if she was hoping to gain followers from the others by being mentioned on their accounts.