Hi Pradheep,
Thank you for your inquiry. Justin here, from Stack Ideas' marketing team. As long as you are holding an active license (which you are!), you can get any latest versions absolutely free. To obtain the latest EasyBlog 5.0.17, kindly navigate to your dashboard and click on the download button; you will download the latest version.
Alternatively, you can update via the updater from your backend. Login to your backed and navigate to Component > EasyBlog. From there, you should be able to see the updater on the right-hand side of the dashboard. Click on update and follow the on-screen's instruction.
Hope these answers your question. Let me know if there's anything more that I can assist you with.