If you can not read the QR code during authorization, as well as can not perform a transition to the link, the code can be obtained by entering a key in the settings of the authenticator manually.
In the application, select or create a folder where the future account will be created. Inside the folder at the bottom of the screen, click the "+" icon and select "Enter Credentials":
In the Name and Issuer fields you can specify the email and name of the account respectively, and in the Secret field you need to copy and paste the key that the system will offer under the QR code.
Also in the Secret select "Plaintext" instead of "Base32". Example of settings:
After that at the top right click on the button "Done" and the code for authorization will be available in the authenticator: