[ParameterOne]

They did register under the international class 009 FYI, and Right to register and right to use are two different things. And usage may have been amended. Click on their prosecution history tab here: http://tsdr.uspto.gov/#caseNumber=87042422&caseType=SERIAL_N...

And in there statement of use it says: The mark was first used by the applicant, or the applicant's related company, licensee, or predecessor in interest at least as early as 08/22/2016, and first used in commerce at least as early as 08/22/2016, and is now in use in such commerce. The applicant is submitting one specimen for the class showing the mark as used in commerce on or in connection with any item in the class, consisting of a(n) specimen-a.jpg: Screenshot of "www.chowdr.us" website using mark specimen-b.jpg: Screenshot of Google Play Store using mark specimen-c.jpg: Screenshot of Apple App Store using mark.

So if you used it before august 22, 2016 you should fight it!