You can change the default currency (USD) to other currencies in OpenCart 18.104.22.168 following these easy steps:
1. Add your local currency in System – Localisation – Currencies (eg. RON, HUF, CHF, EUR, RSD, RUB or anything else)
2. Go to System – Settings – your shop name – edit – Local – Currency, and there change to your current currency
3. Click SAVE in the right up corner
4. Go back to System – Localisation – Currency – edit your local currency – set values to 1.00000000 – SAVE
5. Edit USD – leave the USD ”value” empty or fill it with 0.00000000 – then SAVE
6. Click the Refresh button from the right-up corner
If everything goes well, YOUR local currency will be followed by the ”Default” message.
And the Exchange rates will be the right ones.
You may use as many as currencies you want, but dont forget, always you may have just one by Deafult.