Do any of the servo arms not move at all or feel stiff compared to any of the other ones? As to me it looks like the one or more servos are dead.
Especially if it was working fine prior to this starting.
As it’s been maybe an month at most since you purchased it I would get in contact with whom you purchased it from since I believe servo’s warranty periods are 3 months if you get it from Amazon. (or at least that’s what I’ve seen for mine)
I posted more detail about checking the servo and slightly about replacing them here:
If it isn’t the servo’s then you might have to re-flash the firmware which someone else will have to tell you how to if you can’t find it out yourself.