Rmarkdown HTML files can't be downloaded anymore

I have some buttons in a shiny apps that executes Rmarkdown files generating HTML to be downloaded. It was working fine until today but now I experience messages such as 'An error occurred during a connection to opensourcepv.shinyapps.io. ' and I can't download the HTML files.

Could someone from shinyapps.io report it as a bug and let me know if they are working on it?