Moving site with Shipper to wpmudev host

Hi,
I wish to move this single site (it was created as a Multisite I just changed back to single as support told me) https://budaifarkasok.hu site to here https://bfsingle.wpmudev.host
I tried several ways, added it as a bug here
https://premium.wpmudev.org/forums/topic/new-version-of-shipper-to-check-out-shipper-10-beta-12?replies=39#post-1361457
See my related notes:
http://simp.ly/p/HD0mkS
http://simp.ly/p/JHP8mP
http://simp.ly/p/pLB1zv
I just need a solution how to move this site, as I tried a lot without success. I granted access to both.
Thank you!
Bela Grundmann