I can’t understand why you have been singled out, as many plugins have links to their site from them, there is nothing wrong with this as it is a free plugin, so you should at least get a link from it.
Siwezi kuelewa kwa nini wameonekana kuwa, kama Plugins wengi kuwa na viungo kwa tovuti yao kutoka kwao, hakuna kitu kibaya na hii kama ni Plugin bure, hivyo unapaswa angalau kupata kiungo kutoka humo.