We are sorry to hear it got stuck! Usually that is due to a weak internet connection or occasionally a user may be inadvertently logged out of Bold School. I recommend closing all the windows down and pasting https://www.boldschool.com/login into a new private browser. You will be able to restart from any part of the course and/or re-watch the earlier sections as needed. If further assistance is needed, please do contact our support desk, and we will be pleased to help you resolve the issue.