I have been using DAVID for the last month with the same gene list using the Ensembl Gene ID (example gene:ENSGALG00000012429). But, now when I try to upload the gene list it is giving me this message "You are either not sure which identifier type your list contains, or less than 80% of your list has mapped to your chosen identifier type. Please use the Gene Conversion Tool to determine the identifier type."
What has happened? Is anyone else having this issue?