Podverse legacy also did not have web support for Add by RSS feeds at all. They were a mobile feature only, and an incomplete feature, at that.
With Podverse nextgen, you should be able to add your private RSS feeds on web, and have them available in mobile, and vice versa.
For many reasons, this has been the most complex feature to support in Podverse Nextgen yet...there are many different situations to test for, and we will likely have to iron out bugs as people report them to us.