I have seen a few mislabeled bearings before so that is not uncommon. I do not have a Pulse DX1 Dirt Scooter in the shop right now so I am not able to check and see what size bearings it has. With bearing measurements I can figure out what size it uses though.
Do you have any way to measure the ID, OD and Width of the bearings?
I have been checking into this and I am having the same problem finding the right size bearings that you are. The closest size available is the R6 bearing which is 9.525mm x 22.225mm (3/8" x 7/8") however if your bearing is 21.97mm OD then a 22.225 OD R6 bearing will be almost 1/4" larger and will have absolutely no chance of fitting into a 21.97mm or 22mm wheel hub opening.
We buy parts directly from Pulse so I just sent them an email asking if they have replacement bearings available for the DX1 Dirt Scooter. I will let you know as soon as I get a reply which usually takes around a week. I do not want to ask too many questions at once so I only asked about the bearings this time however if they reply that they do not have the bearings then I will ask if they know what size they are, or if they can sell us the complete wheel with bearings. I will let you know what I find out as soon as I hear back from them.