Some hosting companies may block external connections. In this case, you should enable the data download for QuarticOn and send the following information to the site administrators:
Crawler name:
userAgent: QuarticON.com (recommendation engine for e-shops) Crawler
IP address list
34.243.117.235
34.246.235.204
34.246.34.83
52.211.17.53
54.76.56.3
31.179.145.242
85.128.12.162
52.212.204.163
52.30.159.240
176.31.208.146
176.31.208.155
5.135.45.10
5.135.45.6
5.135.45.5
5.135.45.9