Does anyone know what that messages means?
The result is that I get the message at the bottom line “Connection failed to Bitcoin mainnet”
I’m having the same issue.
Now the DAO is not synchronizing, the app stays ages on “Synchronizing DAO“:
Also, I can’t see my BSQ tokens, the wallet appears empty.
I think the problem originated when I published my last maker ad, later on I received the message from this issue:
Warning
A transaction was rejected from the network.Reject: verack for reason ‘a verack message must follow version’ (1)
From then on, the DAO is not synchronizing, and Bisq eats huge processor resources, the PC becomes hard to use:
Last night I tryed checking the option “Full-mode DAO state monitoring“; it didn’t work.
Now tryning the option “rebuild DAO state from resources“; still taking ages to synchronize 
For the BSQ balance, I see 0 (zero) when I go to DAO/BSQ Wallet, but I see my actual (non-zero) BSQ balance if I go to Account/Wallet Info.
It was an issue with seed nodes, which seems to be ok now. Go back to regular set up and use rebuild DAO stat from resources if necessary.