Sadly network access from SageCell had to be removed following abuse. See the discussion on the sage-cell mailing list:
https://groups.google.com/g/sage-cell/c/ETeONQMYbQM -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/63fe7ea0-4bd2-4a4a-88dd-5f1cb125209cn%40googlegroups.com.
