Scheduled on-demand scans not executing

AVoelp

I run Bitdefender Internet Security version 25.0.10.52 on two PC systems running under Windows 10 (2004) 64-bit. I have configured a scheduled quick scan that is supposed to run daily at a specified time, and a system scan that is scheduled to run weekly. Some time ago (unfortunately I cannot say exactly when) these scans have ceased executing automatically as scheduled on both machines. I therefore assume that this has something to do with either a Bitdefender update or a Windows update. I have deleted and re-scheduled the scan jobs but they still do not execute (however, they can be executed manually).

Any ideas?