There is a lot of alarmist stuff going around about .io ccTLD being "retired", fedi instances that use it having to move, etc.
Keep calm. Here's the one thing you need to know about this right now:
Even if .io ever gets "retired", it will take *years* for this to affect already delegated .io domains in any way at all.
I cannot stress this enough, we are talking years if not decades.
Soviet Union dissolved 33 years ago, but .su domains still resolve.
Deep breaths.
Carry on.
@rysiek hold on, the Soviet Union had a top level domain?