Hi shaziasz,
Connecting your bank to QuickBooks is an essential step and it's vital you're able to do that without any hassle. The Banking module is QuickBooks makes it easy for you to keep track of your transactions and bring your financials into focus. I'll be happy to guide you from here.
Since your bank requires the Multi-currency to be turned on, I'd recommend looking at manually uploading your transactions instead. This article here does a great job at explaining how you can manually import your transactions. I encourage you to check it out and if you have questions, don't hesitate to reach back to me. In case you decide to turn on the Multi-currency feature, I suggest checking out this article here which shows you how.
Let me know if this info helps. I'll be a message away in case you need anything else.
