New Issue With Video
Installation and Configuration
The performance check shows your server is pretty slow, and the system check shows its using 'lightspeed' when the requirements are for 'apache or ngix' so either of those issues could be related to how long it takes to get the file converted.
You can check at
ACP -> DASHBOARD-> QUEUE VIEWER
to see if the conversion process has finished.
There are others who use lightspeed and some of the issues and solutions are posted in the forum, search for 'lightspeed' to see the results
https://www.jamroom.net/the-jamroom-network/forum/new_posts?search_string=lightspeed