Wondering whether anyone has experienced this. Our notification emails from GF contain 1 or more links to uploaded files. These links worked fine until today, but now the links result in http 401 errors. The links work ok from within the WP dashboard in form entries. I have cleared all caches and deactivated some other (potentially conflicting) plugins. Latest version of GF etc. No plugin updates on site since 16th April.
I am asking WP Engine to investigate, in case there is an issue at their end.
The 401 suggests the cause is #7 on the following page of the documentation:
That’s really helpful Richard, thank you.