i have no idea how to use this app, how to open, how to add an account, on a PC

dont work on my firefox (plugin not appear in toolbar) :-(

no idea how it's supposed to work, authenticator.cc has a dead link to docs, getting rid.

填写信息后，无法保存

dreadful another computer nerd nightmare like Fujitsu,

Need simpler instructions on how to use>

Trop compliqué à installer

不能使用已保存为图片文件的二维码

Doesn't work with https://mysignins.microsoft.com the TOTP url I have https://mobileappcommunicator.auth.microsoft.com/activate/xxxxxxxx8/NEU
contains invalid code as the addon says.

Totally obtuse.