No longer blocking advertisement videos on m.youtube

I switched to Firefox for my mobile browsing experience since it allows add-ons (yay unlock origin), but the past day or so I've been getting videos explicitly labeled as ads. I tried purging and updating, uninstall/reinstalling, but nothing seems to work. Is there anything I can do?

[Example here.](https://i.imgur.com/86wVHhG.png)

Edit: I'm also getting those pesky banner ads to install apps that are on some websites. :(