Clay tables actually support up to 70 columns total, not just 50. [1] If you're on a trial plan, you're limited to 50 rows per table, but once you upgrade to a paid plan, you get access to up to 50,000 rows and the full 70 column limit.
Of those 70 columns, up to 30 can be action/integration columns (or 40 if you use a waterfall). So you should be able to add more columns without any upgrades needed!
If you need any more help with expanding your columns or understanding the limits, please let me know. Would you like to share more about what you're trying to achieve with your table setup?
