Go to halfords and ask them to have a look at it
Best go back to the nursery shop you bought from. Personally I wouldn’t rate Halfords but most car seat nursery shops should be willing to help after all ur a potential customer for a new seat
I would post on here to get advice for experts https://www.facebook.com/share/g/18WuCQKYfR/?mibextid=wwXIfr