Having lost the above message after downloading Teamviewer I saw the earlier download next to the new one and since a message from them said close it I did, leaving the new icon. Then a message said to close it before installing, which made no sense to me.
When I could not find your message above I started again and got a reply from The Doctor(?) with a different order number 1557 6305-443 where I explained my deficiencies. Perhaps you could read it too.
The only other info I have got is a pair of panels from T/vr which give my ID as 288 499 981 and P/W as 6168, while the other asks for my partner1s ID, after which you can be connected.
I have also been asked again for £42, which I had already paid earlier. I hope it will not be charged twice.