Questions & Answers about Nie ma dostępu do nowej wersji.
Why do we use the form dostępu instead of just dostęp?
The phrase nie ma ("there is no" or "does not have") always forces the following noun into the Genitive case. For the masculine inanimate noun dostęp (access), the Genitive ending is -u, making it dostępu.
Is nowej wersji also in the Genitive case because of nie ma?
No, its case is determined by the preposition do (to). The preposition do always requires the Genitive case. So, while this sentence has two Genitives in a row, they are triggered by two different rules: nie ma triggers dostępu, and do triggers nowej wersji.
Why does the feminine noun wersja change to wersji here?
Feminine nouns ending in -ja (like wersja, restauracja, stacja) typically change to end in -ji in the Genitive singular. To match the noun, the adjective nowa (new) also takes its feminine Genitive ending, becoming nowej.
Why do we use do for "to" here instead of just using the Dative case?