Where and how do you check if http/1 is used?
Default http version is http/2 and if enabled LSWS uses http/3, but if the client doesn’t support neither http/3 nor http/2 then http/1 is used.
FYI: Most Bots and also Lighthouse uses http/1.1
i tested it in chrome developer-tools Lighthouse :
https://drive.google.com/file/d/1teLn7MJxZL3JdfQFmxFax7-MSAq1_apt/view?usp=sharing
lighthous shows only litespeed’s files as http/1.1
i am not using litespeed server
If you don’t have LiteSpeed web server then you can’t use most of optimization functions of the cache plugin and you can’t use the cache as well. If you want to use all functions you need LiteSpeed web server or quic.cloud. So the reason for http/1 is Apache or any other web server used and you must ask your host provider.
thanks
that was problem of my nginx config