1. I can't activate TZ Portfolio+ Pro:
Please check the Paypal email or the one that you used to purchase TZ Portfolio+ license in order to get the login account.
Then follow the tutorial article below to know detailed instruction. https://www.tzportfolio.com/blog/how-to-activate-tz-portfolio-pro.html
2. I use JSitemap to generate the site sitemap. TZ Portfolio articles are not in my sitemap. How should I do?
You're supposed to create a new data source for TZ Portfolio+ Articles. Please go to Admin > Components > JSitemap > Site Map Data Source > Click to create new data source