Problems with version 1.0.3

I have used this plugin for some time and been happy with it, but now I noticed that search on some .com domains give either:

0(php_network_getaddresses: getaddrinfo failed: Name or service not known)
or
111(Connection refused)

I don’t know if this is only since I updated to 1.0.3 or if the same problem was there before. I tried hosting on different php versions, from 5.3 to 5.6, with the same results.