"Error: Can't ignore this member"

However, I tested "Ignore User" on others, e.g. this fellow named wadzilla69, and those worked.  

to report this to the crack IT support team ...

You cannot put an alias on ignore.  But you weren't trying to do that.

Try to ignore with single or double quotes '2+2=4' or "2+2=4"

Its almost as confusing as ....

I'd her in a heartbeat and not spend any time considering if aliases can be ignored!

My quality control promise to you.
1.  No youtubes
2.  I put tape over my "Post message" key to prevent postorrhea.  
3.  No endless obsessing on all topics, ads, repeat ads, rejoinders.