For how long does LingQ save your progress once you cancel your membership?

I was just wondering. I’ve also read that there is a plan where you can take a break and LingQ will save your progress but without being premium


As part of the cancellation steps, it offered to save my data for $2 a month.

As @bbbblinq wrote, in order to keep your data saved, you need to activate the Vacation plan ($2/month). Otherwise, your data will be removed.