Most of the 'affiliate' ones are slowly not working. Companies are moving away from affiliate marketing and don't want to pay commission anymore.

I was advised this was going to happen in the near future (in December). I thought they may have held off a little longer before de-activating their links.

I think many of them are reducing their budgets and also advertising on social media. Whereby once they get a 'like' they can advertise for basically free.

Looks like I will have to start removing the advertisers sooner than I expected.