Did UPS gateway change?
Our live M1 store and development M2 store stopped pulling UPS rates over the weekend.
Please help. Thanks!
We also experienced this problem, it appears the default unsecure gateway url endpoint now 404's, so you have to use the https version explicitly: https://www.ups.com/using/services/rave/qcostcgi.cgi
Both Test and Live endpoints have changed for accessing UPS API. However, by now, Magento has upgraded to the latest endpoints. So you must be getting the rates.
Alternatively, you can use the StorePep Integrated Shipping & Tracking extension that calls the latest API endpoints and in addition to accurate rates, you can use the feature of bulk label generation.