Extension Manger Sources Follow

It's the first one - Wave_v2.0 for 9.1. It doesn't matter if you also include Wave_v1.0 - the extension manager will filter out any packages that are not applicable, by looking at the dependencies.

I only get a limited number of plugins offered - regardless of whether I search or click on 'most popular' etc...I just have four extensions listed.  I have attached some screen shots..

I've tried a few more machines and I don't think the extension download screen (or perhaps the webservice) is working as expected for 'most downloaded'  On a machine at work R#8.2 the 'most downloaded' within the extension page shows a sorted list (Postfix Templates, utility pack, for tea) but the first entry is <10k downloads...so misses a number of downloads which can be located when choosing to sort alphabetically.  On another machine R#8.2 the 'most download' seems ok showing Respeller Free, PostFix Templates, Testcop....however I know the xunit test runner has more downloads AND isn't shown unless I sort A-Z...then it is available.  Do you have caching on the nuget download web service ??

After a bit more research and using Wireshark...I've worked out the Extension Manager doesn't play nicely if there are two sources with the same name e.g. ".Net Products Gallery" (as in prior screen shot). If I change one of the names then I get the full list as expected.

This occurs if you install R#9.1 over R#9.0
however this doesn't explain what I am seeing with r#8.2

Hmm. Duplicate feeds/feed names are not good. Here's the issue: https://youtrack.jetbrains.com/issue/RSRP-438033