If you can’t create a login, then for sure you won’t even be able to upload the XML file.
Please ensure that there is no issue with spam etc otherwise you won’t get the account activation emails.
I can see that there is an account created but you have not activated it so probably the emails have gone into spam. I will active the account for you.
I too have a new Z-wave device device but do not have rights to upload to opersmarthouse.org, nor can I attach a file to this site to include the details.
Write access to the DB can be obtained by following the instructions in the blog. In general 1) register 2) open ticket for write access 3) get xml generated by OH for the device 4) Electronic copy of the manual.
There may be a similar device you can compare. It looks the same anyway