Ok... I think I'll wait some months to see if the Store got an update & solve it by themselves, Everything seems to not allow me to get it on my desktop.
I did this procedure, but when I was about to send it via mail, this happens:

*Translating: Blocked for security reasons
Explanation from Google Support:
https://support.google.com/mail/answer/6590?hl=pt-BR&sjid=6538337945214380490-SA#null
-- It doesn't allow *cab or *rar files to be shared through mail.
& if the only way to purchase it it's via Gumroad I'm afraid I can't afford it.
Unfortunately, the direct exchange rate makes it really expensive in Brazilian currency (buying it in dollar instead of real). âšī¸
I apologize for this whole incovenience & I thank you so much for attending me patiently and willingly!
I hope to be able to get the app soon on my desktop as I enjoy it so much on my android!
Thank you đ