What is wrong with my uPVC double doors?

Hi, can anyone please help me with a problem I am having with my uPVC double doors on this nice sunny day?

I have an integral garage in my house, I don't use it for a car so about 6 years ago I had some uPVC double doors put on instead of the regualr garage door. In hot weather I always have an issue whereby if I open it I can close it but not lock it. I had the installer back a couple of times and they made some adjustments. After the third time they got a bit cagey and just said it was to do with the nature of the material expanding and contracting in heat, I've no ideas about the validity of this statement though?

I can sometimes muck about with it and get it to lock, but not today. I've had home emergency out a couple of times when I can't lock it and they have manipulated it very quickly to get it to lock but I have never got the exact knack of it.

It will lock eventually when it cools down but I'd like to get it fixed if possible. I've uploaded some pictures but please let me know if there are some better ones I could upload to help diagnose?

What hapens is:

1)The master door is on the left (from the outside) and both the L and R doors unlock and open with no issue.
2)When closing I need to push and lift the R door a bit to get it to close fully, I can then lock it.
3)I can close the L door ok, but the handle will not lift up fully so I cannot turn the key to lock it.

I guess the locking rods (correct term?) aren't quite lining up with the holes in the frame?

Any ideas greatly appreciated as I'm currently stood outside swearing at it.

uPVC doors unfortunately do have quite a rate of expansion. Some adjustment to compensate in the hot weather will need the reverse done in the cooler weather. However, even with some catching on closing, it seems unusual to not be able to lock the door.

I did have this once on a composite door, but after some adjusting the issue went away altogether.

Straight away I notice they are too close together, general rule of thumb is to be able to get a finger between the doors. That said brown doors and this heat will always cause problems

Thank you Millwright and Crank39 for your advice. Sure enough it cooled down a bit and I was able to lock it. Is there any particular way to rectify the lack of space between the doors or adjust them? Or is it a case of trial and error and seeing what works?

I guess my main issue is I always forget when I unlock it in hot weather, both of which are rare haha.

Have a look at the outside edges, is there a lot of difference between the frame and the edge of the door on the hinge side? Flag hinged doors can be troublesome.

In a pinch/emergency hosing the doors down to cool them will help.
They should be adjustable to a point where that is not needed though

Watching the image of the door, the finishing is not perform up to the mark in order shape and based on the design frame the door especially in the different weather changes get blocked. In situations like swollen wood, wrong door frame, loose hinges, and incorrect door alignment.

I have this too, so annoying. Old PVC doors were fine, ones in this house struggle to close. And not easy to adjust (I haven't worked out how). I can still lock mine if I push up on the handle quite hard. Not sure how long this solution will work though!