There are some things to be aware of when upgrading the packages since not everything does get upgraded. A couple I can think of would be configurations...

Looks like an Oracle Explain Plan...

Powershell has had a lot of changes since that series so you can run into issues like that with older articles.
Those modules have been replaced...

You can try the "rectangle workaround". If you can't the charts to render correctly after checking all sizing, settings, etc try putting the charts inside a rectangle....

Those are the failure limit thresholds. It sounds like you are looking for the RetryPeriodOnFailure property. In Cluster Admin, right click on the resource and select properties....

You may want to check the permission set for the assembly you created and see if it's set to external_access. You can query sys.assemblies using something like:...