Others can't see or hear me

Hi all, I'm having trouble with other players seeing or hearing me, nor me them. I've had this problem in both a campaign I dm, as well as a game I was a player in. In both cases, all the other players were capable of seeing me. I've tried using both chrome and firefox, checked for updates (they were up to date), and disabling any plugins. Nothing works. What might be a cause, though, is that I am on another continent than the other players. Is this the cause, or could it be something else?  Best wishes, Y.

Have you confirmed that this is a Roll20-only issue by testing A/V via Discord/Skype/etc?  If so, please carefully work through Steps 1 through 8 of the Roll20 guide to Audio Visual Troubleshooting : Step 1: Make sure you’re using the most recent version of either Chrome or Firefox Please check if these issues persist when using both Chrome and Firefox. (Already done) Step 2: Give Roll20 permission to use your microphone and camera Step 3: Make sure Video and Voice are turned on inside Roll20 Step 4: Clear your Web Browser’s Cache Step 5: Make sure you have the right ports open Step 6: Check if your camera is working with WebRTC Step 7: Check that your camera is functioning Step 8: Do a bandwidth test If none of the above succeeds, please thoroughly work through Step 9 : Step 9: Solving Technical Issues Step 9.2: Ensure that there are no extensions/addons interfering with Roll20 Please disable all add-ons/extensions and anti-virus programs. (Already done) Step 9.4: Provide a bug report Please ensure that the Console Log is complete. Thank you!