Since we submitted our fiance visa application we've used the UKVI email form for updates.

Twice we've had a reply saying the application is waiting to be assessed, but today we had a reply saying there are no updates and maybe we've given incorrect info. We replied saying the info is correct, and asking what it means that there are suddenly no updates. They replied asking for further info, saying they're going to expedite the case.

We've given the info and they say they've escalated the case to the relevant department.

Has anyone ever had anything like this before? Or does anyone know what it could possibly mean?

I'm really worried - could the application be lost or something?