Powershell script to delete emails from mailbox older than an 7 month or specified dates

Hello, I have problem with converting my Search-Mailbox command to another one. If you all know in the future as Search-Mailbox is retired. So I need to use another cmdlet for this command.

My working right now command with Search-Mailbox

Search-Mailbox -Identity ******@test.comm -SearchQuery "(Received:01/12/2017..$((get-date).AddMonths(-7).ToString("MM/dd/yyy")))" -deletecontet

I read a lot of times https://docs.microsoft.com/en-us/exchange/policy-and-compliance/ediscovery/delete-messages?view=exchserver-2019#step-2-delete-the-message and try do step by step and get this code.

New-ComplianceSearch -Name "Remove older than 7 month messages" -ExchangeLocation ******@test.com -ContentMatchQuery "(Received:01/12/2017..$((get-date).AddMonths(-7).ToString("MM/dd/yyy")))"

Start-ComplianceSearch -Identity "Remove older than 7 month messages"

New-ComplianceSearchAction -SearchName "Remove older than 7 month messages" -Purge -PurgeType SoftDelete

But its not work for me. getting error 

Unable to execute the task. Reason: The search "Remove older than 8 month messages" is still running or it didn't

return any results. Please wait until the search finishes or edit the query and run the search again.

my full PowerShell script

Start-Transcript

$smtpServer="smtp.office365.com" # Office 365 official smtp server 

$from = "IT Support <******@test.com>" # email from  

$logging = "Enabled" # Set to Disabled to Disable Logging 

$testing = "Disabled" # Set to Disabled to Email Users 

$testRecipient = "******@test.com"  

$date = Get-Date -format ddMMyyyy 

$Username = "******@test.com"

$Password = "test-" | ConvertTo-SecureString -AsPlainText -Force

$UserCredential = New-Object System.Management.Automation.PSCredential -ArgumentList $Username,$Password

$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri  https://eur04b.ps.compliance.protection.outlook.com/powershell-liveid?PSVersion=5.1.17763.1007 -Credential $UserCredential -Authentication Basic –AllowRedirection

 Import-PSSession $Session

Get-ComplianceSearchAction

New-ComplianceSearch -Name "Remove older than 7 month messages" -ExchangeLocation ******@test.com  -ContentMatchQuery "(Received:01/12/2017..$((get-date).AddMonths(-7).ToString("MM/dd/yyy")))"

Start-ComplianceSearch -Identity "Remove older than 7 month messages"

New-ComplianceSearchAction -SearchName "Remove older than 7 month messages" -Purge -PurgeType SoftDelete