Urgent Car seat issues !! Help needed

[Bengi]

Hoping someone can offer some advice went to view the perfect tourneo custom sport today only to find out current car seat does not fit the isofix, we currently have the Joie bold and really want to be able to use the isofix but it just wouldn't fit,

Can anyone suggest a seat that would fit these vehicles using isofix so that the seatbelt can then be used at a restraint, seems very hard to find something suitable

The vehicle we have looked at is the 2020 facelift version of this helps and ideally want to be able to fit behind drivers seat

[sherwoodcycles]

If it's isofix, how does it not fix ?