If you are unable to build a new diagram or create a new project this maybe due to the web browser being used. Bowtie Master works on all web browsers however, we recommend not using Internet Explorer. As older versions of Microsoft Edge and Internet Explorer will no longer be supported by Microsoft going forwards. As described in this article.

For security reasons and performance Microsoft recommend upgrading to the most recent version of your web browser. Please upgrade to the most recent version of your web browser and log back into your account.

If this has not worked, please get in touch via email to support@bowtiemaster.com