You must not remove the copyright declaration displayed in the software. (Under AGPLv3, 7(b))
When you distribute a modified version of the software, you must change the software name or the version number in a reasonable way in order to distinguish it from the original version. (Under AGPLv3, 7(c))
Unless permitted, you are not allowed to use the author's name, trademark or logo to promote the software. (Under AGPLv3, 7(d))
However, the site https://kxsf.ktnw.cn/ doesn't follow the license. More precisely, it modified the original project without distinguishing (btw the modified version contains bugs), and MOVED the copyright declaration displayed in the software. (Actually, I'm not ABSOLUTELY sure whether the copyright declaration is moved or not, but I failed trying to find it.)
Additional terms under AGPLv3 Section 7:
However, the site https://kxsf.ktnw.cn/ doesn't follow the license. More precisely, it modified the original project without distinguishing (btw the modified version contains bugs), and MOVED the copyright declaration displayed in the software. (Actually, I'm not ABSOLUTELY sure whether the copyright declaration is moved or not, but I failed trying to find it.)