I was waiting for a response from customer service and browed the forums, came across your thread and sure enough, I had successfully added the PMDATA1) to my $34/month phoenix 50gb per month ULCW base plan... And it is greyed out in the incompatible...
Well, like so many other people here I was an early subscriber and have a large discount... One that was setup as my reward system years ago and will no longer be honoured. Also like others have posted, I upgraded fairly recently (2 accounts) and now...