No lingots for streak?
I just reached my 60 day streak. I wasn't awarded any lingots for reaching 40, 50 or 60 days. Why not?
The bell shaped icon on my duolingo toolbar is grayed out. Does that mean I can't get credit for streaks anymore?
There's an ongoing test in progress as part of which the streak award has been removed for a percent of users. The idea is to eventually do away with this means of earning lingots if there is no significant impact on the language learning process for users (and probably user retention to some extent).
You can check the lingot store page. If you're part of the test, you will not see an option for earning lingots by streak in the list of ways mentioned.