There are 2 ways you can get to ExplaindioPlayer.
When you purchase ExplaindioPlayer you will get your Explaindio Member Account login details. If you already have a Member account use your Explaindio Member account login credentials to login to your Member Account.
Login to your Explaindio Member Account in this URL: https://account.explaindio.com/in/member
Use the Username and Password you created to login.
Once you Login to your Explaindio Member account go to your ExplaindioPlayer App content area by clicking the link "Click Here to Access Explaindio Player & Tutorials"
Click the button called "Click Here to Access ExplaindioPlayer"
2. You can simply visit URL: https://app.explaindioplayer.com and login to your ExplaindioPlayer.