Mission description clearly says:
Subject of the email should be "Welcome" and body simply "Hi, {name}" ({name} should be replaced by a user's name)
with comma after “Hi” (both En and Ru descriptions), but Check accepts only string without comma.
Welcome Email by SendGrid
SEARCHING TIPS
==============
author:[username] - Returns posts by user
associated with the given user.
tag:[tag_name1],[tag_name2], ... - Returns
posts associated with the given tag(s).
phrase - Returns posts that contain the word
or set of words in title or text.
