Script execution problem for migration of exchange 2016 public folders to office365

Raphael_Veauvy I was hoping to go through this https://learn.microsoft.com/en-us/exchange/collaboration/public-folders/migrate-to-exchange-online?view=exchserver-2019%20 yesterday and move our Exchange 2013 on-premises Public Folders to Exchange Online. Unfortunately I came across the same issue which is item 1 under Step 3: Generate the .csv files. I did successfully run the script back in June this year but never did finish this migration. 

The article mentions:

To run the migration scripts in this article, you must use an account that has basic authentication enabled. Accounts that use multi-factor authentication (MFA) are currently not supported.

Here is a link but it pertains to Exchange Online and we're running the script against our on-premises server but I'm wondering if it will impact any of the other scripts?

Thanks

* Update - I ran Powershell as an admin on my Exchange 2013 server, ran this command Add-PSSnapin Microsoft.Exchange.Management.PowerShell.SnapIn and was able to run the script without error. I was using Exchange Powershell and it wasn't working.