issues with placement

i installed the plugin but i am having real issues gettign the floating icon to show where i want it –

Firstly: on all screens it needs to be on the bottom right and spaced from bottom and right, in the plugin itself there seems to be no options for spacing the icon.

Secondly: i got it looking OK on a desktop but had to start mucking about with CSS to remove the bloack dropshadow and background that was inherent on the links despite having removed all colour settings (i’m using an image as the link), having sorted this and moved to mobile view all i got was a black square at teh bottom of the screen.

If the reviews are real then i must be doing something wrong because they all say it’s super easy to use, but thats not been my experience. any assit you can provide would be great