Hi Aleksey!
We use an iMac (21.5-inch, Late 2013) 2.9GHz Intel Core i5 with 8GB 1600 MHz DDR3
Do you have separate projects for iOS and Android?
Try also opening manually on Unity the projects on the build computer and making sure that the platform is set for the correct build type already.
Hope this helps! If not, do not hesitate to reach out to us via e-mail nuno.monteiro@bicastudios.com