Hello hoang t., I am sorry to hear that you are encountering this issue. Unfortunately, we are unable to determine the specific issue you are having without more details of the exact issue you are having. As such, please carefully work through these steps of our guide to Solving Technical Issues : Step 1: Make sure to use the right browser Please check if these issues persist when using both Chrome and Firefox. Step 2: Ensure that there are no extensions/addons interfering with Roll20 Please disable all add-ons/extensions. Step 3: Clear your cache If none of the above succeeds, please thoroughly work through all of the requested information in Step 4 . (Don't forget the step by step instructions and complete Console Log!) Thank you!