I bought LSWS since v3.3.24.
And have the same problem : Version Manager seems like cannot detect the new version or even download it.
So I always must to reinstall it manually through SSH.
I've been manually whitelisted all litespeedtech.com's IPs but I still got the same problem until now (I am using v4.0 and LSWS WHM Plugin still cannot detect for v4.0.1)
Any idea on how to fix this?