Option "Attachment" and "Choose a file"

[digital]

Hi,

I would like to know how to upload many files at once? Previously is was possible, but right now I can upload files only one by one. 

Cheers,

[Andrew Fecenko]

We've just added multi-file upload to the new experience, if you refresh your page you should be able to attach multiple files again!

[Daydreamer Mike]

File attachments have recently changed, see the article below

https://community.atlassian.com/t5/Trello-articles/A-new-way-to-attach-links-to-Trello-cards/ba-p/2404217 

Note you can still drag and drop multiple files onto a card or a board in 1 go