@seb_l0y  The process to download software changed over the past couple of weeks and now you can go to My Pega to download software. The previous Digital Delivery page will redirect you as well. 

Please have a look at the My Software FAQ page where it is specified that download of older versions is not possible for the following reasons:

"Pega’s goal is to deliver the highest quality software and help our clients best design, deploy and manage their investment in Pega. We strive to continually innovate and evolve our products, providing our clients with richer functionality and higher quality products. As part of this ongoing process, Pega encourages users to implement the latest versions of all available products. "

Personal Edition is not a supported product as such and therefore cannot be requested via a support request.

Only the latest Pega Platform™ Personal Edition is available to all clients and partners via My Pega.  You can try Cloud Trial version as recommended in this post.

Please take a look at the discussion  The New Software Download Experience in My Pega is Live! for any further questions you may have.