This app has a bug that is very common on devices that are set to work in a language that is written from right to left (RTL), such as Arabic, Persian, Urdu, or Hebrew. Luckily, this bug is super-easy to fix. What happens if that the app tries to flip itself automatically, which is unnecessary, and it ends up working badly in English. Most likely, you can fix this bug by changing one line in AndroidManifest.xml: android:supportsRtl="false".

It sounds like the bug that is described at https://phantom.canny.io/feature-requests/p/issue-with-arabic-language-price-display-reversed . A reply there says that it was resolved, but I see it now.