I think my ALLBOT servos are dysfunctional

Hello there,

I have just assembled my ALLBOT VR408 after a long time of it sitting idle and I think a couple of the servos are dysfunctional. When I move them they don’t make the classic mechanical sound, they rather do a strange plastic noise as if the gears are broken or something. When I turn it on and test they don’t seem to work properly as well. I checked the Whadda website for replacement motors but they are out of stock. Is there an estimated time when they will be back in stock?

And can you maybe guide me in the right direction to find similar servos from my local supplier? I checked the ALLBOT servos for its name but couldn’t find anything written on them. Will the MG90S Servo Motors work for ALLBOT?

Thank you!