Lots of ext4 USB stick container problems with hAP ax³ and 7.14.2 or 7.15beta9, downgrade to 7.13.5 and everything works:
http://forum.mikrotik.com/t/upgrade-to-7-14-1-on-hap-ax3-broke-my-containers/174668/1
Lots of ext4 USB stick container problems with hAP ax³ and 7.14.2 or 7.15beta9, downgrade to 7.13.5 and everything works:
http://forum.mikrotik.com/t/upgrade-to-7-14-1-on-hap-ax3-broke-my-containers/174668/1