I don't have to activate / authorize a replacement box?

Earlier in the week I got a replacement box for one of our older boxes (didn't support Disney+ or Paramount+).  I swapped the boxes, booted up the new one and it's working fine.  Some of the paperwork in the box said I have to activate this new box but there were no prompts to activate it (specifically asking for the last four digits of my phone number) and it's been working fine for about 3 days now.

I just want to be sure about this.  I don't want it to all of a sudden stop working.  Do I need to activate / authorize a replacement box that I received?