Hi,
as I am from Austria I have a lot of .at and also .de Domains for my client sites.
They all are marked red, because Creation, Updated and Expiry Date is 1. January 1970.
In the Domain Monitor extension it shows Domain expires in 0 Days, while in the MainWP Dahboard I see -19475 days.
And by the way, I just noticed, for following TLD´s in the MainWP Dashboart it shows N/A:
.net, .shop, .click, .blog, .vip while in the Domain Monitor the values seem to be correct.