Im the DM and no one can see my attack rolls

Hi. I was running a game in October and everyone could see when I rolled attack rolls. My players just told me that for the last couple months, they have not seen my attack rolls, so when I say a number they have just taken for granted that I was being honest.  I was.  The point is, it didn't occur to anyone that I didn't know they couldn't see what I was rolling. What setting did I mess up that all dm rolls are TO DM.  They don't see anything i roll. Thanks in advance.

Assuming you're using the 5e OGL Dnd Character Sheet, probably the "Whisper Rolls to GM" setting:

Here is my Guide to Whisper Settings: Note that the whisper settings are attached to each individual sheet, there is no actual game setting. 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 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 settings. Wait a minute or two for it to resolve. There is a thin easy-to-miss progress bar. Never Whisper There's a bug in the game settings that doesn't recognize "Never Whisper Rolls", possibly because it is trying to write a blank value. The solution is to use Whisper Toggle. The default is public, so once this is set, all rolls should show. Go to the Campaign Settings Page Choose "Whisper Toggle" under "WHISPER ROLLS TO GM" 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 settings. Wait a minute or two for it to resolve. There is a thin easy-to-miss progress bar. Query Whisper The default is public, so once this is set, all rolls should show by default unless you choose otherwise. Go to the Campaign Settings Page Choose "Query Whisper" under "WHISPER ROLLS TO GM" 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 settings. Wait a minute or two for it to resolve. There is a thin easy-to-miss progress bar.    7. Have fun!