I recently saw this on https://www.beercellarlist.com:
“On April 30th, 2020 BeerCellarList will cease operations. We thank you all for the last 5 years of support and community. Unfortunately, we have run out of capital. While thousands of you have tried the software, very few committed to a premium subscription. As that was our only source of income it was not enought to sustain us. We never sold any user information or data to any 3rd party. For those of you using the software NOW is the time to export your cellar so you do not lose your entries. Please contact support if you need any help.”
If you are using BeerCellarList, be sure to export your data!
If you are looking for an alternative cellar tracking application, https://HaveYouSeenMyCellar.com is able to import/export your cellar data.