It is very unlikely this has anything to do with tracking pixels. Even most graphical email clients don't load pictures by default these days, and they probably have plenty of customers that just never check their email anyways so I doubt that would be enough to shutdown an account.
This is more likely about them trying to confirm contact information to make sure your phone/physical/email address hasn't changed, and since you haven't confirmed that they are restricting your usage to prevent someone from stealing your account until they can confirm it is still you.
I would say this isn't them trying to make you dance, this is much more likely to be them trying to keep your account safe.