routerBoard 5.7 + usermanager 5.7

hi everybody,
i’m a french peaker, i just try myself in english.

I have install routeros5.7 and usermanager 5.7.
hotspot is configured and it work fine.
i have activated radius.
all configutaions are good but i have te message radius is not responding.
i’ dont know what to do

thank you for your help