Off-line sensor and contacts

I have 2 contacts and 1 sensor that has been off line since the 27th of this month. Not sure on how to get them back online or even if it’s a way to get them online?
Has anybody else experienced this issue?

Assume you’ve tried all the usual: reboot camera, remove and reinstall hub, delete and re-add sensor?,sign%20on%20the%20top%20left.&text=Pick%20the%20sensor%20you%20want,flash%20at%20least%203%20times.

No @WildBill I wasn’t sure since cameras all are working just fine. I will start the process ill let you know how it goes. Thank you

I will also be trying that out, thanks @isaiah58.