Hi MJ1942 ,
Thank you very much for your post. Sorry to hear you have a layout issues.
Not sure what could cause it, not reported from anywhere, so maybe it is site related only. Did you try to update your WooCommerce to the latest version.
ATUM supports older WC versions, but always keeps up to date with the latest WC and WP.
If update does not help or you simple do not want to update, open a ticket here.
We may need a copy of your site there to debug the issue in safe and local environment.