12 month Xbox gamepass subscription problem

Can anyone help please?

My son has an xbox series s, we bought a 12 month essentials gamepass with a gift card in dec 25.

He went for an upgrade to the premium gamepass for 1 month. When he has cancelled this his essentials gamepass has also stopped working and doesnt show in his subscriptions list.

Has anyone else had this and knows what to do? We have reset the console and pulled the plug for 10 minutes but nothing has changed.