And for your electric car too. EVs are best left at around 50% charge if not being used, don't know if that also applies to camera lithiums.

Nobody seems to come back and let us know their outcomes do they? Perhaps there is enough of a clue to the problem written already.
I believe your repair options include Harrow Technical: http://harrowtechnical.co.uk/
and the PENTAX Technical Helpline: https://www.ricoh-imaging.co.uk/en/repair-process.html
Perhaps you could let us know for once how you get on!

There's a touch of the Harry Potter Deathly Hallows with that!

Why not keep it until the ban is lifted?
If you really must I might well be interested but no idea as to value.

You know that, I know that, but not until you find out they're doing it.

Another issue with cloud storage is that the company providing it might just stop doing so with little or no warning! Or you may miss a payment or two and loose access. BTs cloud storage systems have gone through several incarnations which were simply dropped and replaced. I wouldn't trust another with anything important.
I did notice Google seem to automatically back up any photos on an android phone to their servers whether you like it or not.
The normal recommendation is to keep incremental backups and an off-site backup of important data and schedule to update that too. I doubt many home users do all that though.

I don't store images on SD cards on purpose, but occasionally require an old card for reuse and have found images on them still intact after a good few years. I've had more issues with memory sticks failing.

Don't rely on cheap CDs either. They can become unreadable after a few years. Some of my home made music CDs now sound worse than bad 78s!

Well worth digging those out.
Do you carry that round in your gadget bag along with a branch to overhang a landscape?

I think I might need a new pair of glasses!

If / when you come over, could you stock up?! One bag does me four loaves (one loaf and two fishes short of feeding the 5,000!)