Hello,
I know this post is 2 years old but I'm EXACTLY in the same situation. I'm a french citizen working in the US doing a research activity for public interests with H1B visa since my arrival for the first time last year.
My Research Institution made me fill the form 8233 as soon as I got my SSN last year and I got the Form 1042-S early march this year.
This particular and rare situation is extremely difficult to handle as online platforms don't consider H1B visa eligible for tax treaty while IRS says it's eligible under specific circumstances...
By any chance, if the author can reply, what happened to you? Does IRS tell you whether you were eligible or not after doing your tax return?
Thank you.
