

Linktree is a social media site that gives you a simple web page with all your links to your actual social media sites. This way, you can provide one link to your fans, taking up less space in a profile, then fans can pick and choose to follow on whichever services they prefer.
Usually, it’ll be something like instagram, onlyfans, fansly; maybe some others like snapchat or kik. I think sometimes music artists use Linktree sites too, ie completely SFW, but primarily they exist for NSFW content creators.
Nominally EU voltage is 230V, and may be 240V. In fact, it can be as high as 230V +10% = 253V. Higher voltage means more power for a given current, so nominally it’s 16A x 230V = 3.68kW, but you could have say 16A x 250V = 4.0kW.
If your sauna is 400V then it sounds like you’ll be 230V (400V / sqrt(3) = 230). But the voltage can also be 230V -6% = 216V, so 220V is within scope.
But yeah, standard voltages in the EU are either 230V/400V or 240V/415V. They’ve been harmogenised, but if you look at the numbers you’ll see the trick - 230V +10% is roughly the same as 240V +6%. So the range is 230V-6% and 240V+6%.
You’ve got a 3 phase connection though so you might find you’ve got different single phase breakers on different phases (eg lights on one phase, sockets on another), with slightly different voltages for each one.