HELP! IP Notification Reporting Wildly Wrong IP Address

Been using IP Notification successfully for years. Suddenly it's reporting the wrong address from two different machines, two different locations, both Macs (Sierra and Yosemite I think). Both machines keep alternating between the same two addresses. (IP locations of which report as being NOT my ISP and thousands of miles away.) In reality both locations' IP addresses have not changed at all even though I keep getting messages saying they are.
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