Change subscription level words

Hear devs and community, I am loving this plugin so far. While developing my site I found I can’t change the word “level”, more precisely the words “subscription level” which is the .pmpro_checkout-h3-name class appearing on the page visible right after a user selects a level.

So I would like to change these words because is not nice to display to users that they have “levels”.

Is there any add-on, a filter to add to function.php or any settings I missed?

Thanks in advance