I can't connect my iPhone to my dash cam

Since changing from an android to Apple I have had a problem with my Nextbase 522gw wi fi not pairing to my 14pro. The Bluetooth, and satellite all connect apart from the wi fi. Have emailed Nextbase who make the camera via email who were quiet helpful giving me detailed information and making sure the phone and dashcams software were all updated and said the phone is the problem. Since April when I bought the phone i cannot pair the phones wi fi, to allow me to download film footage to my phone. My wife has a i phone 12 and an i pad, both connect with no problems. A way of getting around this was to buy a lightening card reader but on reading the reviews this also has stopped connecting with the newer phones, is it because Apple has changed the software that they also use for the dash camera? Has the programme been changed that is on older phones? IF anybody has this problem on the I phone 14 series could you please let me know it would be gratefully appreciated.

[Re-Titled by Moderator]