I’m sorry to cause such consternation!
I maintain these sites on a shoestring, using free and open source capabilities where possible, and I’m afraid that under these circumstances you get what you pay for. (If you pay for things you may not get them either – but that’s a different matter).
The .TK domain allows people to register domain names for free, which is why I use it. Registering multiple domain names can start to become costly… Unfortunately, this free domain service therefore attracts a host of dodgy characters apart from myself, and is constantly having arguments with the ICANN authorities about its failure to remove criminals, hackers and other assorted undesirables (such as model boat enthusiasts?). One such argument seems to have come to a head a few weeks ago, resulting in the entire domain being shut down for some weeks.
The sites are now addressable again, but of course there can be no firm guarantees that something similar will not happen again. Incidentally, while they were down some interest was expressed by another vintage R/C web site in mirroring my ones – I’d be happy if anyone wanted to do that, and it would certainly add resilience….