This is in my account activity:
New feature added
Block Multiple Device Usage was added to your line xxx-xxx-xxxx via Store Representative on 07/25/2023 at 12:58 PM. This change will be effective 07/25/2023. You will be billed $0.00 per month plus taxes and fees for this feature.
Who did it, why did they do it, how will it affect my account and, best of all, I have not been in a T-Mobile store in years.