Hi,
as Ian mentioned - all posts in english please.
Short the question, translated:
Juba (HSSJ) and Gulu (HUGU) in Uganda are not available in the Simbrief database.
Answer:
There are no official information in the AIP Uganda for Gulu, therefore there are only the airport-reference coordinates available but no runway - so for Simbrief useless but you see the airport in the charts. A second reason could be, that this airport is also used by the military and therefore, no data available.
Further the ICAO code HSSJ for Juba is outdated - the new one is HJJJ and Juba is included and can be used.
Hope that helps,
Richard