Paypal payments for Drupal Ubercart do not support just any currency. The list of supported currencies is pretty static: AUD, BRL, CAD, CHF, CZK, DKK, EUR, GBP, HKD, HUF, ILS, JPY, MXN, MYR, NOK, NZD, PHP, PLN, SEK, SGD, THB, TWD, USD.
Webshop is using LTL as its default currency and as you can see its not supported by Paypal. When cart is submitted - it submits full amount, just in EUR (Paypals default currency in websites settings). If default website setting is not set - it will be USD. Keep this in mind, so you could adjust your case accordingly.
- Drupal 7
- Ubercart 7.x-3.5
- Paypal Website Payments Standard (WPS)
- Currency LTL
There are a couple of suggestions online for INR, ZAR and RUB, but none of them suited my case. Research on suggested behavior gave no results, most of the answers led to 6.x solutions, one time patches on different D7 versions or bold suggestions to try Currency modules in Drupal. Thing is - all currency modules i've tested are outdated or have no connection to WPS, Cart or at least Language.