For issue reporting please use github. https://github.com/nomidi/silverstripe-seo-hero-tool/issues
Please include in the data the exact Version of SilverStripe (for example 3.1.3 or 4.0Alpha). Furthermore please be so kind to include any PHP or JavaScript Error in the full stack trace. Please follow the issue as we might need to ask you further questions to be able to reproduce the issue.