US Immigration from Moldova

My Fianc went to her Visa interview in Chishinau, Moldova, on April 20, 2021. On May 10, 2021 she received her passport back with her Fianc Visa in it. She sent me a picture of the Visa questioning it. Apparently it's valid from May 6, 2021 thru 10 September, 2021.

Maybe I'm crazy, but I was under the impression that a K-1 Visa had a 6 month validity. I counted and ours is 4 months and 4 days.

Hello all ..I m slightly concerned as my wife entered the U.S. on a K-1 visa in January and our 90 timeline is up on April 28^th (2 weeks). We submitted our AOS package to the Chicago location by certified mail and it was delivered on April 4^th. In the form we included form G-1145 for e-mail notification as well as our check payment made out to the Dept. of Homeland Security. 10 days after delivery, we have yet to receive any notification of receipt (by e-mail or mail) and the check included has not been cashed.

I ve read that there seem to be delays in the Chicago Lockbox processing center but do we have any reason for concern if the application is not acknowledged before our 90 day timeline expires?