Server cannot connect anymore

[Valpuia]

I have install litespeed using this Link I didn't point any DNS as it is still in develop, I'm hosting in AWS Lightsail with ubuntu platform, but around today (i,e,. 19th Oct 2021) 12:00 noon I cannot access my site it showing
This site can’t be reached
<IP> took too long to respond.

I reboot, stop & start lightsail instance but cannot get running, I can connect using Lightsail instance SSH but not from local (using .pem file I have download)

I'm not sure whether is this lightspeed error or server

I'll be appreciated if any helps, thanks in advance

 

[Pong]

Did you install LSWS(LiteSpeed Enterprise Web Server) or OLS(OpenLiteSpeed)?

For OLS, please use https://forum.openlitespeed.org/

 

[Valpuia]

I install OLS, thanks for informing. now my problem is solved, the instance public IP is changed and that's the error..