@oscarone
The first thing I checked was my reward letter, I thought my dob was on there, it’s not. I’m sure it was on the review application but my copies of that were destroyed in my recent house fire.
Like you I know DWP can use an online identity checker. I had to renew my photo licence in May, I took a photo on my phone ready to upload it but wasn’t asked for one in the online application. My new licence arrived a few days later with my old photo on it.
I went through everything on the phone yesterday, including online id checking but to no avail.
I’ll send them what they want by pre-noon special delivery and give them another call this morning, like you say I might get a friendlier ear on the other end.