please help!

my hap lite v6.30.4 have a connection on main(WAN) but on lan no internet please help.

Here you go man, just follow the article and set up your device.

https://thenetworkberg.com/nat-on-a-mikrotik-router/

We are suggesting you to simply use a default configuration with your configured strong password:

/system reset-configuration

Be sure you update the device afterwards:

/system package update check-for-updates
/system package update install