1. Just attempted to upload some of may latest sonar charts [7/14/21] to the Raymarine site & it I get error message "Sonar Chart upload failed." I was able to download the latest charts & community edits. I only have about 500 MB of space left on my 8 GB San disc car. Im running a 2021 Raymarine axiom pro. Any ideas how to fix this?

2. i downloaded a lot of sonar charts/comm edits for areas i am intending to travel, how do i get them off the card to free up some space? 

TY for any help.