Why is the german word "stark" always recognized as an ADV without a sentiment value?

[Diapolo]

I'm currently digging into using spaCy for a university project working on a sentiment analysis. I just made my first steps and have a working spaCy installation using 'de_core_news_lg' as model and 'spacy_sentiws' as an extension.

See this sample:
"Ich bin stark. Die Digitalisierung begegnet uns überall – und hat die Art, wie wir arbeiten und leben, stark verändert."

Ich, None, PRON
bin, None, AUX
stark, None, ADV
., None, PUNCT
Die, None, DET
Digitalisierung, None, NOUN
begegnet, None, VERB
uns, None, PRON
überall, None, ADV
–, None, PUNCT
und, None, CCONJ
hat, None, VERB
die, None, DET
Art, None, NOUN
,, None, PUNCT
wie, None, SCONJ
wir, None, PRON
arbeiten, None, VERB
und, None, CCONJ
leben, None, VERB
,, None, PUNCT
stark, None, ADV
verändert, None, VERB
., None, PUNCT

Why is "stark" always recognized as an adverb and why doesn't it get a SentiWS value at all? If I look into the SentiWS_v2.0_Positive.txt file, it should get a value of 0.0040 ("stark|ADJX 0.0040").

Thanks,
Dia