From his site:
"We are not taking transmissions in to be remanufactured at this time due to ongoing supply chain issues."
Not surprised at this, as supply chain issues have affected many manufacturers, especially since the Covid dust-up. If you can't get one needed part, you can't rebuild them.
Jerico went out of business, so parts are obviously hard to find, if not impossible. This was completely expected, until someone steps up to continue production. That is probably unlikely, at least anytime soon.
It seems he is still selling parts and parts kits though.