When attempting to export LSST Alert Packet Data (for all objects I’ve tried, i.e. diaObjectId 170028526449197317), downloading as a CSV gives an empty file despite having 533 rows online, and when trying to download it as JSON, it appears to just scroll up to the top of the page (i.e. https://lasair.lsst.ac.uk/objects/170028526449197317/#top). The empty CSV file also appears to have different column names ([MJD], [filter], [magpsf], [magpsf_error], [flux_status]) than what appears online ( [MJD], [BAND], [TARGET DIFF FLUX], [RELIABILITY], [IMAGES], [ALERT PACKET]). This was reproducible by another user for the same object.
sorry about that Marina and thanks a lot for reporting!
We’ve opened an issue on the GitHub (in case you want to check developments). We will get back to you when it is fixed.
In the mean time would you like me to write you a snipped of code to download the data you’re after? It will require an API call so you’ll need a token (which you should already have if you are registered on Lasair) and the lasair python package 
I actually don’t need anything additional—it was part of a hands-on session with @leanne this week it Ghent, Belgium and we noticed it and were told to report it. Thanks for taking a look!