Shortcuts unable me to use my native language

Hello - I use RemNote for flashcards. So far I have created them on my Windows PC and it was all fine. Lately I got MacBook, and a problem showed up. I am from Poland, so there are many special letters like ą,ó,ł,ż etc. Let’s take “ą” for example. I can’t insert this letter, because whenever I click Option + A (like normally, to create “ą”) a shortcut for Aliases is triggered. It is a problem, because I cannot afford a pro version at the moment, to be able to change the shortcut. However, not being able to use my native language in RemNote is a big issue. I am also not able to use ń, ć, ś. What can I do with that?