It's two years and 6 weeks (almost 7), not 1 month.
that's under 6 (working) weeks from today.
I'm trying to read where you got 2 years from, but I can't find it.
Was there an additional warning from before? or are you suggesting that when the Russian military invaded Ukraine that every Russian business and citizen should have pulled out of using European services?
Which is what I suspected. A formal warning is the only one that matters in terms of actual notice.
Likely some of the more recent arrests in Germany have woken up Hetzner to the possibility that what they are doing may well be interpreted as illegal even if it wasn't spelled out to them in a way that they heard it, or maybe they figured the war would be over before it was their turn. Who is to know? The fact that they turn around now is possibly reflective of direct pressure on them or it may be their own reasoning, someone downthread suggests that Hetzner may well have lost its usefulness in terms of being an intercept. The possibilities are endless and it is all just speculation, I'd take the letter at face value and leave it at that.
A ton of Western companies started pulling out of Russia in short order. It should have been obvious to anyone that even if their particular Western supplier continued to provide services for the time being that was at high risk of termination at any time--even absent a specific public statement. So, yes, the rational plan would have been to pull out of using European services or at least have a contingency plan to rapidly do so.
I assume you mean T + 6 weeks, where T is the time since the invasion and T is approximately 2 years, even though T + 6 weeks is still less than 2 years?