Please allow us to post .rar or .zip files

The "How to report a bug or crash" thread tells us:

"Please pack it all together in a .rar or .zip file (using Winrar or 7-zip for example) and attach it to your post. If it's too big, you may use an external file host such as wetransfer or dropbox."

But when trying to attach a .rar file to the post the site says:

"Invalid file type. Allowed types are: .png, .jpg, .bmp, .pdf, .doc, .gif, .jpeg"

Please allow .rar & .zip files as this will increase the quality of data you will receive

.7z files should be allowed. 7Zip is free and better than winrar.