With the current beta 7.2.5.BETA-0 I can’t successfully sync my vaults to my iOS devices from my MacBook. It seems it’s the same problem as described here a while ago:
By switching to the current final version 7.2.4, it’s working fine again without any other change.
1Password Version: 7.2.5.BETA-0
Extension Version: 7.2.5.BETA-0
OS Version: macOS 10.14.2
Sync Type: WLAN