We recently arrived on the DR (digital nomad) visa. As you know, that is a temporary stay visa (120d) and then you convert it to a residence permit. The appointment with SEF was set by the embassy where we applied. However, we have no information on what to bring, what’s required, etc. for that appointment. Some sources online say bring the same things as for the visa application, but those weren’t returned to us. 
And the official Portuguese sites (including the appointment one) say nothing at all. We’ve tried the embassy…to no savage.
If anyone else has recently converted their temporary stay to a residence permit, your help is appreciated!!