USPS last changes on  7 Aug 2022
(many recent reports from clients saying theirs quit completely – most likely folks who haven’t updated in a while)

UPS last changes on 1 Jul 2020
(if you have my template, it came with UPS – don’t activate without contacting me)

Updating can be done quickly. $75 per plugin

And a reminder – if you quit using Authorize.net, don’t forget to tell them to deactivate your account. I missed that last year when I switched to another provider and incurred monthly fees for a long time.