We had a site using your theme but recently needed to upgrade it when the old version of Cornerstone was causing errors.
We were unable to upload plugins or the theme even though the site was showing as ‘validated’. We manually downloaed and uploaded the theme but are unable to upgrade the plugins.
We have even one so far as to purchase a new license, but keep getting the same error:
‘Uh oh, we couldn’t check if this license was valid. Details.’
Can you assist?