What can be wrong on Production Tenant search?

[Ofer-Gal]

I have the following code running fine on my developer tenant but stuck in production tenant.

$rootConn = Connect-PnPOnline -Url $rootUrl -ClientId $ClientId -CertificatePath $certPath -CertificatePassword $CertPass  -Tenant $tenant -ReturnConnection
#$smList = Get-PnPList -Identity "ECG-Sites-Master" -Connection $appConn
# 1 for Tenant, 2 for Hub, 3 for Site, 0 for default behavior
$web.SearchScope = 1 
$web.Update()
Invoke-PnPQuery
Clear-Host
Write-Host $web.SearchScope  #Shows 'Tenant'
$SearchQuery = 'LastModifiedTime=today AND ContentType:"DPCDocuments"' # Stuck here in production
#Run Search Query    
$SearchResults = Submit-PnPSearchQuery -Query $SearchQuery -All
Write-Host "Found: $($SearchResults.ResultRows) files"  #Never get here in production

I also tried to connect as myself with $rootConn = Connect-PnPOnline -Url $rootUrl -Interactive with same results.

our production tenant uses Multi Factor Authentication developer tenant does not but I have many script using certificate that work fine in both tenant.

Any idea?
Thank you