after a couple of days attemtpting to sor this out on the original host, I had to transfer the data to a new hosting account at a different company. The original company were helpful, but unwilling to get involved in the Vanilla Forum software support. As it is 'Open Source', support is voluntary and instead of waiting for assistance, I moved it to another company, exported the data and imprted it here. I have not been able to check the data, but it should be fairly up to date, although I may not have transferred ALL the original forum. I.e. pictures and attachements, etc. may have gone missing. Unfrtunately I am not skilled enough to know how to get anything back that is missing.
I trust you will be satisfied with it as it stands, although I will eventually make chnge to themes, etc. to make it similar to the old system. However, I will not do that until you have all been able to login and use the forum as before.
After checking the old system, it looked as though the forum may have been hacked. there were a lot of Chinese characters in the database when I checked it out.
It will be a few days before everyone can see this forum, as it has changed IP addresses and nameservers. So if you have ways to contact people (quiz and facebook page), please let as many people know of its return. Safe sailing.