After years of using free version of strava just agreed on premium, and you know what? No way to turn off on premium too.. So simple so annoying so long implementing thing - just can't understand..
After a pain of clicking out each of the annoying list of suggested friends strava shows me annoying list of suggested challenges, and thise i cant click out, aaggghhhh
*** Work Around ***
Install android emulator, for example andy. First setup will require about 5 minutes, but after you will be able to use it pretty fast each time.
Inside android emulator: