I can't log in to my bought minecraft account.

Dear Mojang employees,
I would like to report an issue that is currently happening with my minecraft launcher. I have bought a minecraft account today (10/25/2020), after my first purchase attempt was a failure because of an error occured during the payment confirmation. Now that I have succesfully bought Minecraft, I have to inform you that I can not login into my account using the launcher nor the website. I already couldn't log in to minecrat.net using my personal computer so I decided to use my father's computer in order to buy a minecraft account, I have asked why I couldn't log in through your discord group and some people suggested I should clean my browser cookies but a person with a higher rank in the discord chat told me that this would not work either. Therefore I have logged into my minecraft account using another laptop and managed the payment, yet I have encountered another issue regarding my personal computer: I can't log into the minecraft launcher using the correct e-mail, username and password. I have changed my password multiple times, It still does not work. However when I use my father's laptop again in order to log into the launcher, it works perfectly fine.
I deeply hope you could help me with my issue. Thank you for taking your time to read.
Cordially.