NopAdvance UPS Plugin is based on latest UPS API https://onlinetools.ups.com/ for nopCommerce. This is out of box supported from nopCommerce version 4.20 but we understand that there are many store owners who are still using older version of nopCommerce and UPS plugin.
1Shipping rate calculation.
Supported nopCommerce 4.10, 4.00, 3.90
Forever free plugin
Free 1 year support and upgrades since date of purchase
Fast and active support