Hello,
Sorry for the issues you are having with the maximum tickets. I can help resolve this.
First can you confirm that on saving the a ticket, it saves everything else, but the Stock Field.
Then as you mentioned in the WooCommerce Products there is no ticket field, it is all done through the Events Edit Page.
Then can you please follow our Testing for Conflicts Guide and see if that resolves the Stock Field Not Saving.
https://theeventscalendar.com/support/documentation/testing-for-conflicts/
Let me know what you find out and we can go from there to fix it.
Thanks