Hey @Rodrigo !
Welcome to the forum and thanks for helping us make Spekcle better 
1 - Would you be able to share with us the Revit file so we can debug it?
2 - I checked and the Door category is actually missing! I’ve just added it and will be included in the next release. This might be partially the reason of problem 1 too.
3 - Yes, that’s correct. Revit windows are hosted elements and should be sent with their walls if you’re receiving them back in Revit. If you receive them in another software (like Rhino) I think their location should be accurate. Let us know if we should investigate further.
4 - Yes, if sending Revit <> Revit it’s very important that the same template file is used on both ends so the family names and other things can be properly matched.
Any other questions don’t hesitate to ask!