You will probably have to use a paid VPN no matter what route you take. Free VPN's may sell your personal data. Colleagues at work should be able to recommend several paid VPN's.
The fastest way to get a transcript as noted in the IRS Transcript webpage is to create an account with a photo of yourself. If that is objectionable, there is an online form to request a mailed copy. Note that the telephone number is for requesting the copy by mail. It does not appear that you will be connected to an IRS agent, who will give you the 2020 AGI over the telephone. It's too late in the filing season to wait for international mail to deliver the transcript.
Both the free version of OLT & the paid version (which may end up being free, because you don't need a state return) have the Form 2555. If the OLT return is identical to that created by Turbotax, then you will not have to worry about accuracy. There is no desktop version of OLT. Be certain to double check the OLT return; because after e-filing, there is no access to the Step-By-Step process.
