Hey there, @AttikEssentials!
Ryder here, from the Social Care Team at Shopify. Thanks for posting! The store's selling currency can be changed in your Admin by going to Settings > General and scrolling to the bottom of the page. Once you have your first order - whether it's a test order or a real order - your store currency will be locked. We've implemented this feature to avoid any errors in reporting, as changing your currency will impact your Analytics among other areas of your store. We can still help you unlock the currency options, but before proceeding, I'd like to clarify what the main impacts are to ensure you're properly aware of any potential areas you need to be aware of for your account:
Apps: Some apps might have limitations when it comes to changing your store's selling currency.
If you have any questions or concerns regarding how changing your store selling currency will affect your apps, you'll need to reach out to the app developer for support prior to changing your selling currency.
Gift cards: Any gift cards that have a remaining balance in the old selling currency will not work once you've switched to a new currency.
This can be managed by issuing a free gift card at the same balance value in your new currency.
Keep in mind if you're using Shopify Payments and want to switch to a selling currency that is different than what is available in the Shopify payments region, you'll need to choose a different payment gateway. That being said, you'll still be able to sell and get paid in different currencies. Merchants using Shopify Payments are able to sell to customers in any of the currencies that Stripe supports. Shopify Payments also supports the selling and accepting of payments in different currencies.
I've also sent you an email (to the email address associated with your Shopify Community Forums account) with this same information. If you're comfortable with the above impacts, please let me know and we can proceed with authenticating you on your store's account and temporarily unlocking your store currency, allowing you to adjust it to your preferred currency. Hope to hear from you soon!