Failed to sign up error

My students are trying to sign up for dynalist in my classroom. We have been using dynalist for our science notes for years with wonderful results. Today, however, many students reported having an error signing up. They tried both signing up with Google, as is our typical method, as well as signing up with their email address. I imagine that all of us signing up from the same location caused this issue, but I have been doing this for years without any prior incident. Is there any way around this problem, as dynalist has been an essential tool for our classroom?!? Thank you in advance!!