There’s no way that I know of to retrieve deleted data. Snowplow Mini does not allow you to archive data or persist it in any way. You can quite easily predict it - after a week the data is liable to be lost.
I’m sorry, but I can’t help you any further than I already have - Snowplow Mini is a testing tool. It is used for testing and demonstration purposes. By design it doesn’t persist data. If you need to store, archive or persist data then Snowplow Mini is not the tool to do that. The Snowplow pipeline is, and it’s open source.
You’re also free to fork the Mini Source code and have a bash at making it do whatever you want, but I really don’t see why when there’s an amazing open source technology available to you that’s been engineered to do exactly what you want.
The question has been answered more than once, I’m closing this topic.
If you have genuine questions on setting up a full pipeline or on using the products as intended, please don’t hesitate to open a new topic using your original account.