Minix U22-XJ - Issue with installing CE on eMMC

I’m keep getting error, trying to install in single-boot mode on my Minix:

Please choose one option? [1/2/3/4]: 3

Free space of 'partition CE_FLASH': 512MB
Warning: Could not find 'dto' partition!
Could not find 'CE_STORAGE' partition!
Failed to read size of partition 'CE_STORAGE'!
Failed to create new partition table!

but I can go to the next level, if I try to the dual-mode:

Please choose one option? [1/2/3/4]: 1

Free space of 'partition CE_FLASH': 512MB
Free space of 'partition CE_STORAGE': 52710MB

Used space of '/flash': 257MB
Used space of '/storage': 121MB

There is enough free space on eMMC for installation!

Install CoreELEC on eMMC.
Continue? [y]: 

Does anyone know what’s the issue with single-mode installation?
Also, if I do the dual-boot, does it automatically boot into CE by default?