Layer Slider Update and possible Highend update problems

I bought the Highend them earlier this year (or was it last year?) I know that Layer Slider came with it. I need to update it but need a purchase code to update it. Where can I find that?

Also, how can I update Essential Grid if it also came with Highend?

FYI, Fastest Cache doesn’t work with Highend anymore after an update. Can’t remember if it was theirs or Highend’s.

thanks.
Rina

my site is: http://www.RinaOrellanaFlamenco.com