How i can challenge someone

Answer 1

The lighting bolt icon from the app version (green plus sign).

Alternatively, you can go to the three dot menu while inspecting a SoloLearner's profile to see if a Challenge option is available (also in app).

Answer 2

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... by the way, your tags seem spammy. You should probably practice informative tagging.

Please help keep the quality of posts high in this section of the forum by reviewing the following:

https://www.sololearn.com/Blog/38/8-simple-rules-to-get-help-from-the-community/

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