Home currency data inconsistent. Please try again and if the issue persists, contact our Support Team for further assistance?

I appreciate you reporting this issue, @ceo-rockmillsfin.

I'm here to give updates on this investigation about the error you encountered in setting up multicurrency in QuickBooks Online (QBO).

Upon checking here on my end, our Product Engineers are working on fixing the issue about setting up multicurrency. Although there's no specific time as to when the error will be resolved, it would be best to contact our Support Team to be added to the list of affected users. This way, you'll be notified promptly once there's a resolution. Here's how to contact them: 

1. In your QBO account, go to Help (?).

2. Select either of these tabs:

• Assistant tab and type Talk to a human.
• Search tab and click on Contact us to connect with a support expert.

3. Choose how you want to reach us (phone or chat).

Live chat is available 24 hours GMT Monday to Friday. 

For future reference, let me add these articles as guides in importing data into QBO: 

• Import your chart of accounts to QuickBooks Online
• Import data from other software into QuickBooks Online

Keep us posted if you have updates about the error you encountered with setting up multicurrency in QBO. We'll do our best to assist.