Valid cookie formats such as JSON and Netscape are supported, for uploading you can drag a file (.txt or .json files are supported) with the appropriate content in the field, or click in this field and paste the copied text with valid (correct format) cookie data.
It is possible to sequentially load cookies or combine cookies into 1 file (if your knowledge allows you to do this correctly). When adding cookies sequentially, add one file first, save, press edit and add the next file, save and so on. Please note that if domains and parameters match in previously loaded cookies, they will be overwritten by the last loaded ones.
To upload cookies to the profile and to save cookies, you must enable saving cookies in the profile storage settings.