I know this happend to a few people.The problem is that i have 2 accounts with 1 email.I recived the mail that i was invited to the technical alpha and i folowed the instructions but later i noticecd that i accidently made another account in the procces and because of that i am not able to acces my old account on the microsoft store and insider hub.If anyone has any questions or can help pls msg.
Multiple account problem
@copak13 Also, because this is an Xbox Gamertag specific issue, you may want to contact Xbox support directly. They will have more tools and be able to get you access to your old/the right Gamertag.
Contact Xbox Support: https://support.xbox.com/en-US/contact-us
@copak13 Somehow you need to be signed into the Microsoft Store with the Gamertag that was mentioned in the email you have recently received.
8 out of 9