Configuration not being saved

hi, I am using the WP Like plugin on a localhost WP instance working in Dev Mode.
I had disabled all my plugins to root cause an issue I was facing, since then, when I try enabling the WP Like button plugin, it get’s enabled but when i update the configuration settings and click on Save, the page refreshes and loses all the changes i made (including the App ID, which pages to show the plug-in on, etc.).