J2 Prime cant scan qr code - Android Apps and Games

Hello,
I use an Samsung Galaxy J2 Prime, and i've been trying to connect to the whatsapp web through the Opera browser(also tried with the Edge Browser and Chrome Browser), but i cant the problem is that the cellphone cant read the QR code, i've already tried to restart
my browser, cellphone, clean the lenses,monitor , restart my internet, i've already checked my connection, flip my phone upside down, my whatsapp, browser, android is up to date and it also dosen't work on others computer, but if i try with other phones, it
works
What else could be the problem?

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