I have exactly the same problem, so I decided to weigh-in on the matter… Maybe my two cents will be helpful somehow.
Apparently, our National ID card is not accepted. I understand that you may fail to see the problem with that, since you still accept an international passport (that we can apply for).
The problem is that it’s not all that common for people in Portugal to have an international passport (we can freely travel inside Europe without the need for a passport).
We can certainly apply for one, but that takes time and money (even though its’ not that much, nobody really wants to have to apply for one…).
Obviously, my main suggestion is for you to accept Portuguese ID Cards.
Since I’m unsure if that’s possible on your end, I also have another - broader- suggestion:
From what I’ve read here, I understand that it currently takes around 72 hours for accounts to receive a response when it comes to the activation of that same account.
Unfortunately, when - for some reason - the answer is negative (either you can’t accept the documents or they’re somehow illegible) we have to wait another 72 hours (or more, in Kholl’s case) for the new answer to the new submission.
Now, that new submission will often have questions that need to be answered on your part before we actually submit the final documents - well, this leads to yet another 72 hours (or, probably, more).
My advice is simple: To give priority to those who have already waited a large amount of “cumulative time”.
Thanks for all your work!