family members lost access

Hello, good day and thanks for your question. Sorry to know about this. The usual case for this is a possible account mismatch and this is what is triggering the lost of access to the subscription. Each member that was shared of access should check on their end if they are really in the family group by going to https://account.microsoft.com/family, check the subscription status on their account at https://account.microsoft.com/services, ensure that the correct account is being used on any of the Microsoft 365 app/s like Word by going to File > Account > Update License and lastly they can removed from the family group and do another invite and monitor how it goes. In the event that you will still encounter an issue, you can also reach out to the support team from the below to get the account/s checked on what is transpiring behind this issue.

• Open https://support.microsoft.com/en-us/home/contact?SourceApp=smc2&ContactUsExperienceEntryPointAssetId=Google from a browser or you can also launch the Get help app on your PC.
• Type in talk to support or talk to an agent.
• Click on the blue button (Sign in or Sign in to contact support) on the below part.
• Sign in/Log in when prompted and try to connect to an agent/support from there and please take note that it will take several attempts due to the queue or workload before you can get a hold of someone from the team.