LOP,
in all fairness, your issue stems from Part 61.
With part 61 you got an 'upgrade' on your existing tickets.
At the point of hire now, your aircraft providers insurance comes into play...not all insurance companies have gotten their heads around the licensing changes, and that is reflecting in the policies being adapted by aircraft hire/training facilities. It also stands that some hire companies are behind the 8 ball on getting insurance sorted to cover guys like you.
Don't feel alone, and don't denigrate the company because of an admin issue.
Get your full PPL done and this won't be an issue.....by the time you do that, the rest of it will have fallen into place.
We had the same problem when RPPL and UPPL changed to GFPT and PPL.
Safe wings!
Enjoy