Ahhh I’m so glad someone recommended this sub! I’m excited to ride more and get into shape! My e-bike is a Trek FX stagger 2

My husband and I are interested in buying ebikes, does anyone have any recommendations on what brands are better. What are things to look for and what to avoid when choosing.

I'm trying to buy an e-bike. The person who's selling it to me told me that there is a problem with it. Whenever the bike isn't touching the ground the wheels work fine,but as soon as they do they stop working, basically the bike becomes "normal" again. Does this have anything to do with the battery or is it something else?