I've touched nothing. Haven't changed themes, is that something I should do?
And why did the people you were ignoring/people who ignore you go away?
The classic theme looks nearly identical to the 1.1 version. Fonts are all the same, only some of the font sizes have changed (very few at that). Button placement hardly seems worth quibbling over but I can hold a poll on the matter if someone besides you or PC has a rational objection. You ARE viewing the forum from a real computer and not a phone, right?
The old ignore feature was a modification of SMF 1.1. Ignoring people is built into SMF 2.0, but doesn't support seeing who or how many people are ignoring you.