testing

Greetings, Recently I bought from ebay an Inspire1 used ofcourse. What are most important things to check, so in case any issues would like to detect them in first day, not after 1 month from buying it. I could benefit from eBay sellers protection and get my money back if there are something...

So I'm due to recertify my Part 107 by Sep 1st and I had a quick question some of you might have some knowledge on. I still have access to my initial training course I purchased through Drone Pilot Ground School. I know the recertification test is slightly different than the initial test, so do...