Game breaking issues

Greetings as of about an six months ago, I have been having serious game breaking issues happening. Firstly dynamic lighting just breaks, with no reason, players then see all the map, this ruins the immersion for me as DM and for the Players. Secondly my rolls which I make using purchased monsters, when I use roll to GM, my players can clearly see the roles, luckily they tell me. This also breaks immersion as Players both know something is stalking/stealthing them, and the role clearly tells them the monster type. After all this the creature sheets will sometimes lose the ability to roll attacks, only the saving throw spells work, anything with an attack just rolls a blank space in the chat. I use both Firefox and Chrome as both only work occasionally, I have cleared my cache reguarly, and performed updates on browsers etc anything to get it to work and it fails me so often, these three things are consistently an issue. Sorry if this has been posted before, I have seen similar posts and tried to remedy it using the fixes but they just keep coming back, any advice would be greatly appreciated.

I can't answer to the DL issues. I have only had the "entire map revealed to player" once, and that was over a year ago. I've had occasional other problems, but nothing as gamebreaking as that. For monsters's rolls showing, make sure that your default is properly set on the campaign settings page and then propagated into your campaign: These instructions are for changing the defaults for all the character sheets in the game, then applying the settings to all existing sheets. Note that this will also change your PC sheets - you will have to manually change them to a different setting if one is preferred. Here are the ways to toggle this behavior: Always Whisper Go to the Campaign Settings Page Choose "Always Whisper Rolls" under "WHISPER ROLLS TO GM" in the Default Sheet Settings 2a. (Optional) Choose "Off" under "ADD CHARACTER NAME TO TEMPLATES" in the Default Sheet Settings Save Load your game Go to the settings tab on the right and scroll to the bottom where you will find a button that says Apply Default Settings. Press it. Choose to update the Whisper (and Template )settings. Wait a minute or two for it to resolve. There is a thin easy-to-miss progress bar. I would also advise to try running in a private browsing window, to see if any problems are coming from extension conflicts, and specifically try running your game without any Roll20-altering extensions like VTTES. Lastly, you might consider clearing your  Chat Archive. A game's Creator is often able to fix issues with their Text Chat by  clearing the Chat Archive  (note: not  clearing your current Chat Log ). A GM might want to copy/back up the Chat Archive before the Creator clears it.