Currency by geolocation on Shopify store

I need someone to help me with the following. Please note that I’ve paid people on Freelancer to deliver me incomplete work. I don’t want to install any apps and please do not bid to tell me at the end that Shopify won’t allow this or that. If you look at the list below and think that Shopify won’t allow, do not bid. My budget is now $20, but I can tip only if all items are delivered in full, meaning working. 1. The shopping bag and checkout are only working when I select a different currency, but not for the geolocation currency. E.g.: if you open the store and leave as AUD (or whatever is your geolocation), then add a product to the bag, you will see that the bag price is in USD not AUD. Then you go to checkout, still USD. 2. The currency selector at the top stopped working. When you select any currency, it changes to USD. Only after you select the currency a second time, it changes to the correct currency. 3. Please remove the “update” button next to the currency drop down and make sure that only by changing the drop down, it will change the currency on the store (this is how it was previously). 4. On mobile, previously I could see the currency and language selectors on the menu, now they’ve disappeared. Kindly fix this to add them back to the mobile menu (not to the page).