2016 V40 T2 R-Design - Both key fobs suddenly not working

[yuomi]

Hi Folks,
New to the forum so hope this is formatted correctly.
Left the house this morning and tried to unlock the car - nothing.
Went and got spare key - nothing.
Changed Cr2430s in both fobs - still nothing.
Took off the manual lock trim on the passenger side door (why oh why is it on the passenger side?) and entered - alarm went crazy.
At first, neither fob would work in the slot to start the engine, but in panic may have forgotten to press clutch.
Eventually, main fob works in slot and engine starts. Folding wing mirrors are still not deployed though as they engage when the fob is used to unlock.

Questions:
Any idea what could have caused this? Car continues not to respond to either fob on any buttons (locks, lights, horn, boot etc.)
Is there a manual way to deploy folding wing mirrors?
Also managed to knock the rearview AND rearview stem off when getting from passenger seat to driver's seat. Any idea how to reattach the stem? I'll be a monkey's uncle if i can figure it out.