I'm using QGIS 2.18.20. On MacOS High Sierra 10.13.5
Only recently I haven't been able to find uninstalled plugins. The settings show the repository is "unavailable".
I'm not using a proxy. I've tried using http:// instead of https:// but it comes up with SSL error.
I've manually downloaded the desired plugins (Animove and Point Sampling Tool) but I can't find the .qgis folder on my mac (perhaps this is a lack of knowledge about macs so please advise on this mac users!) so I'm not sure how to go about manually adding the unzipped files
Best Answer
Managed to figure this out after lots of searching through this site:
These posts were very helpful: