If you unpair your device from Monolith your private key will be removed and you will no longer have access to your Contract Wallet. Please keep a backup of your Seed somewhere safe (not on your device, in case your device is lost or stolen).
You will need your Seed to reactivate both Monolith and your Contract Wallet.
Please note that Monolith never sees your Seed or keeps a copy of it therefore we cannot help if you lose it.