The error "AllowTemporaryEnterpriseFeatureControl - failed to delete regkey" suggests a registry permission or access problem. This can happen if the regkey is locked by another process or if the client does not have sufficient permissions. Please try running the script below on the affected clients and then check again to confirm if the issue is resolved.
# Stop Office ClicktoRunService
Stop-Service -Name "ClickToRunSvc" -Force
Stop-Process -Name "OfficeClickToRun" -Force -ErrorAction SilentlyContinue
Stop-Process -Name "OfficeC2RClient" -Force -ErrorAction SilentlyContinue
# Clean Registry
Remove-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Office\ClickToRun\Updates" -Name "UpdateDetectionLastRunTime" -ErrorAction SilentlyContinue
Remove-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Office\ClickToRun\Updates" -Name "LastScenarioId" -ErrorAction SilentlyContinue
# Restart Service
Start-Service -Name "ClickToRunSvc"