Hi @herby07
Sorry for the inconvenience.
As a first step, could you make sure the IP for the crawler and the User Agent are whitelisted in the site? Add this information to any security plugin you are using and also ask your hosting support team if this information can be included on their end. Find more information about the IP and User Agent in this link:
https://wpmudev.com/docs/wpmu-dev-plugins/broken-link-checker/#troubleshooting-notes
If the recommended action from above doesn’t make any difference, could you help us with some additional information about the broken link error codes you are getting? You can share a screenshot of the errors from the HUB, so we can perform a further check.
Looking forward to hearing from you.
Kind regards
Luis