Hello,
Thanks for reporting. We are indeed aware of the very recent and significant modifications that were made to the ADNI website.
It seems like the new download interface of ADNI is still unstable and susceptible to further changes in the future.
We tried to contact them in order to get more details on their timeline but without success so far.
In this context, we are waiting for their interface to stabilize before investing engineering time in updating our converter and related documentation.
That being said, Clinica being an open source software, contributions of any sort are more than welcome. If you were able to find a way to download the data and make the converter work with the new interface, we could very well value your experience to speed up the development process.
Best regards,
Nicolas Gensollen