Hey @venugopal85k,
The free version of our plugin is definitely not a trial version.
We have a paid version because we obviously need revenue to pay our staff and continue development on the plugin, but we are dedicated to creating the best SEO plugin on the market so that you can compete with the big guys out there; regardless of whether you’re a free or paying user.
So, if you are experiencing any issues with the free version, we obviously want to fix them. May I ask whether the data is disappearing in SEOquake or inside All in One SEO? If you can tell us what the URL of your website is, we can also investigate it for you.