9CA525A07A23-mysimplelink

> 9CA525A07A23-mysimplelink

> is showing up on my wired connections to the router on Port 05.

   Huh?  What, exactly, does "Port 05" mean to you?  At what, exactly,
are you looking?  What, exactly, do you see there.  Copy+paste is your
friend.

   What, exactly, is your (unspecified) "the router"?  Look for "Model"
on the product label.  Firmware version?  Connected to what?

> I tried blocking it [...]

   "tried" _how_, exactly?

> [...] but I lost internet connectivity.

   Not a useful problem description.  It does not say what you did.  It
does not say what happened when you did it.  As usual, showing actual
actions (commands) with their actual results (error messages, LED
indicators, ...) can be more helpful than vague descriptions or
interpretations.

> My main router login [...]

   Is your (unspecified) "My main router" different from your
(unspecified) "the router"?

> If you put in 192.168.0.5/ in a browser bar it comes up with a login
> and password box, [...]

   Is this ".0.5" somehow related to the mysterious "Port 05" above?

> Any ideas?

   Provide a problem description which makes some sense to someone who
can't see your equipment, or how it's connected, or how it's configured,
or what you're doing with it, or what happens when you do it?

   Don't invent your own technical terms ("Port 05") which make no sense
to anyone else?

   Try a Web search for "mysimplelink"?