Boarding pass denied? (UK)

Hi everyone,

Can someone help me with this as it’s the first time it happened to me and not sure what to do or what’s the requirement.

For reference, I have indefinite leave to remain, lived in England since 2014.

Basically I came to Spain this weekend and last night when I went to do the check-in I got denied the boarding pass saying they couldn’t check my ETA or eVISA. However my mother which has or should be under the same circumstances was given a boarding pass. Has anyone had this happening too?

I think the only thing is that my passport expires next month, to which I need to go to the embassy and renew it.

I went to check my UKVI account and everything is up to date, my passport number and everything else.

My wife also has the same circumstances as me and she checked her flight back check in options and she didn’t hace that ETA or eVISA pop up, she hasn’t checked in yet as she’s coming back at a later date.