Apple Watch series 1 screen has become detached, but still working

It will not keep working for long :(

The likely “repair” will be a service exchange watch, and with the age of your watch warranty is unlikely to be a consideration so it will be billable. Contact Support for more information and start the arrangements.

Looks like you will have to go the repair route:

https://support.apple.com/en-ie/watch/repair/service

I have had my Apple Watch for two years and the front face has dropped off but still working. Surely this is a defective design fault? Does anyone have any experience of getting this repaired?

I’m having the same problem. Then, did u get the problems solve?