Hi Tim sorry about this! It looks like you may have ran into some table limits here.
We currently limit starter tables to 5k rows, 70 columns and 30 enrichments per table. We do this to ensure we can continue providing excellent performance across the board. If you've run out of rows, you can always create another table. If you've run out of columns, we'd recommend checking to see if there are any columns/enrichments that you aren't currently using.