Guaycuyacu doesn’t send fresh seeds like theobroma anymore, as the Ecuador government has been seizing his seeds. Fruit lovers has cupuacu seeds from time to time. Columbo973 on this forum has both cupuacu and cupui most years, but don’t know if he has cupui this year. Was going to order cupui from him this year, but after another shipment of theobroma seeds took too long to arrive and the seeds died due to the virus, I didn’t. I think the foreign mail system is quickly coming back, but make sure it’s doesn’t take too long. Also try Ertdude also on this forum, he may have these. He told me he was buying a property with the most different theobroma species in Puerto Rico. Many other people in Puerto Rico may have cupuacu, don’t know about cupui. Good luck!
Tomek