Merging of Apple IDs - again
I have a very old AppleID dating back to ~2008, which isn't a mail address, it's just a username. This account has been used for many purchases over the years, is the master account for family sharing (all slots available are in use). It is also my Apple Developer account ID.
I have a newer account, which is an @me.com account from when that first came to be. This has 1000's of mails associated with it, plus some App purchases etc.
I am finding that I cannot login to Apple any more with the first account, as it's not a mail address. I am constantly informed by my laptop and iPhone that the account is locked, and I have to unlock it every time I need to do an App update. Which starts the cycle again.
Is it still the case, after over 10 years of asking and begging to be able to merge the old 2008 account into the @me.com era account that Apple still refuse to do this?
I cannot delete either account, there is too much invested in both of them. I could, in theory, create a generic throw away mail address just to use as the ID for the old account - though what that does to the family sharing and developer account is unknown. My Apple Developer account uses my @me.com address for notifications, but is billed to the 2008 account.
It's all a bit of a mess, it is within Apple's remit to solve, though they seem unable or unwilling to help - any bright ideas?