I am having the same issue since January 23, 2026, but getting error code 106 in QBO. I did notice that when I tried to login to Servus, it it is prompting for a one-time passcode. I am thinking this is why it won't connect with QBO, because of the OTP requirement now. I've reached out to Servus to find if there is a way to turn-off the OTP requirement. I tried the suggestion of incognito mode...but it didn't work, same 106 error message.
