COVID - Can we take 1/2 of last months unpaid rent from Depoist?

[Shannon Tayllor]

10/02/2020 - tenants notify me they can only pay 1/2 months rent for October due to job loss COVID related.

10/05/2020 - tenants notify me that they are moving in with family, their last day will be 10/30/20.

Their one year lease expires on 12/15/20.

They move out on 10?30/20 with less than 30 days notice and are breaking the lease. They want 100% of their deposit back and they are saying that due to COVID I cannot take the other half of rent from the security deposit due to the COVID related protection.

Can I take the rent they owe from the security deposit? 

They are also asking for receipts for repair work at the house. Is that a requirement? 

Thank you,