Open a new tab and navigate to chrome://settings/content/cookies. You should see a page that looks like the below image. Note the red arrow, we will be clicking that next.
Click the "Add" button as indicated in the above screenshot. Type in exactly https://www.heroesrisinggame.com and click the "Add" button.
You're done! You should be able to go to the facebook tab with Heroes Rising, click the "Login" button, and successfully play!
Nobody has reported this issue for other browsers yet. If you need help doing this for another browser, please head to the Heroes Rising Players Group On Facebook (https://www.facebook.com/groups/232301183620548/), and make a post about it. One of the Developers will see it, and we will reach out to you with assistance! Thanks!