I didn't have the resources available to save all my data, do a factory reset and restore it.
I found a better option.
I solved this using the "run ADB commands" option in Sidequest and running the command as written here:
This opens the android settings page in the headset which oculus has tried to prevent you from accessing, and from there you select date and time, disable network time, enter the correct date and time, and you can reenable the network time after that if you like. Then forget your existing wifi connection and reconnect.
This fixed it for me.