I can not answer some questions

Answer 1

Hi Aanu , the reason is because you haven't verified your account and for that, you'll be restricted to some actions like answering questions and upvoting/downvoting.
Do this by going to your Gmail, find sololearn and verify your account. If the link is expired, come to the app and request a new one.
If you still can't verify, try to reach out to one of the Moderators or email sololearn at
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Answer 2

Welcome to the forum:
https://www.sololearn.com/discuss/1316935/?ref=app
If you need help, then tell us how to help you. Be more specific with your questions from now on.
Thanks and happy learning