Cannot reinstall updraftplus (premium)

I was trying to copy my live version of a site to my local machine for editing using the migrate plugin I purchased off your site. However, when trying to activate this plugin, an unknown error occured, which left me with a white screen when accessing WP-admin.

I deleted the updraftplus folder from my plugins directory and was able to log back in. However, when I now try to reinstall the plugin I seem to get the same error and am unable to use my site / the plugin.

Is there away to clear some values in the database e.g. in wp_options to make sure that I get at absolutely clean install of updraft and the migrate plugin? I tried several cleaning plugins and did a manual search of the database to no avail.

What do you suggest I try to resolve my issue?

https://wordpress.org/plugins/updraftplus/