if i visit https://languagetool.org/ free version
and perform a grammar check “I not feel”
it able to tell me the issue of auxiliary verb and giving correct suggestion “I do not feel”
But when trying the same via java maven repo
https://mvnrepository.com/artifact/org.languagetool/language-en/6.3
or python wrapper language-tool-python · PyPI
it unable to detect the issue and mark it pass
is there any gap between api and ui version?