Filler cap won't go on

Filled up motorhome on the way to Woodstock but I couldn't get the fuel cap to go back on its a new ish Peugeot lucky the garage had those tempory caps any ideas before it goes back

 

Key in and definately unlocked ?

 

I tried all sorts of things the cap won't seat where it should for some reason I don't like to mess around to much on site as people will know it's not locked

 

Woodstock was about 45 years ago......

Why wait so long until now to post about it......

 

Probably all evaporated by now then

 

But I bought the tickets of eBay you trying to say it's not on I

 

Did these tickets on eBay include a "free" filler cap to tempt you into a "bargain".....

With the cap out, can you turn the key back and forth, as you hold the cap, and see all the parts move in and out, so to speak..

 

Funny thing was after messing around for about10 mins At the pump I went to pay and he said it's already paid for I went cheers he said you can pay for their fuel it was a tenner cheaper than mine so I agreed nearly made it normal price fuel