Why did the account SoloLearn challenge me

Question

This morning (for me) the account "SoloLearn" Which has lvl 20 challenged me and only answered right the questions that I answered right

Answer 1

Sololearn has a bot that sends challenges to users with 3-4 right answers
-> they try to motivate you to play more challenges if you are not playing much for a while

Answer 2

Oh, ok thank you!

Answer 3

It happens to the best of us no matter what your rank is.

Answer 4

This is sololearn algorithm.
They try to challenge those users who arent active anymore for a while.

Answer 5

Yeah, it does happen sometimes.

Answer 6

Sololearn has a bot that sends challenges, but won't send you a challenge if you only study python courses due to the fact that the bot isn't set up with python!