How to remove author name from thumbnail?

Hello,

If you want to remove the author name from specific elements only, you will need to use css for it. The theme settings remove the author from all of the blocks and modules at once, not for specific ones.
For big grid 6, please add this code in the theme panel->custom css box:

.td_block_big_grid_6 .td-big-grid-post .td-post-author-name a, .td_block_big_grid_6 .td-big-grid-post .td-post-author-name span{
display:none;
}

Thank you!