Password Manager does not automatically fill in and needs a second step to add it

log in to password manager comes up on my edge browser (which I chose) to open to the 'vault'; after logging in, nothing happens, nothing opens, there is no vault…I prob need help to work this…also when the one and only password I added is supposed to fill in the one and only user name I also added, the red key and password disappear and I am left with wrong password…then there is a new step where I need to reenter the password which to me defeats the entire purpose…