For the longest time the when visiting arevainna.com in mobile it was showing like without a theme

I have no idea why its like that.

Now

This is because. I used the jetpack mobile theme to fix it. I guess its a solution other people maybe able to use if they face the same problem. I highlighted in red. You need to go to jetpack>settings. Make sure you are in the writing tab below.

Check enable the jetpack Mobile theme.

Hope it works for you