Having a look at the code and the shiny app:

Maybe a download button would be good as sounds like you're targeting non-technical types and they'd probably want to download a spreadsheet?

please license the tool, such that we can re-use it.

just push "add a document" button, call it liscence and you will be able to choose one. (MIT is a standard one for code.)

We will then be able to fork and make some modification without liability issue ;)

Show books in list rather than "NA" in journal, example DOI: 10.1002/9783527686063

Remove duplicate papers where there was a new version and the title changed, e.g., DOI 10.12688/f1000research.15522.1. Remove the earlier version, keep the later one.

Would there be a way to recognize first or last authored papers and order the list accordingly? Also is it possible to filter for papers (orcid can also list posters and other stuff as long as it has a doi...)

the export would look like:
first authored papers:

last authored papers:

other contributions:

I've added a rough way to find bioRxiv papers (based on the publisher), but this needs to be improved. Also, other preprint archives need to be added.

to fail well for a nice user experience, maybe validate ORCID ID input? maybe there's a shiny widget that does that kind of thing already? or just do manually, e.g., right now 0000-0001-6339-03745 gives Error: 404 - Not found : No entity found for query which I understand, but i imagine others won't know what they did wrong (in this case just an extra digit on the end of the ID)