Keynote Remote Control accidental 'unlink'

I have successfully used the iPhone to remotely control a Keynote presentation on the iPad. However, then I accidentally hit the 'unlink' button on the iPhone, and could no longer connect the iPad and the iPhone. Since I couldn't find a description of the solution, I want to prescribe it here for others in a similar situaion to find it on their search.

The solution is rather simple - maybe that's why nobody bothered to describe it somewhere ;)

When you use the iPhone and have unlinked it from the presentation device, then

1) open Keynote on the iPhone

2) open the remote menu

3) Top-left corner is the 'Devices' button to show all known devices

4) It will show the device you can no longer connect to.

Swipe left to 'delete' the device

5) Then you can continue newly adding the device again (linking it again)

That should resolve the issue, good luck.