Hey guys I'm running SE 4.8.7 and my IT guy just updated our new PHP version and now when I upload videos it's not showing my thumbnails for videos which you guys know can make the site look bad and not enticing to click on. Can anyone help what the issue can be? Also I'm like to update to the latest version of SE? Anyone know of any themes that show up great on mobile and tablets or do you need to get the IOS and Android app? Thanks guys please help as the videos are a major part of my site.