first, I am not sure what the prefix is but it is requiring me to select one and I have no idea what to choose so I chose the first one listed.
Since Sunday, Jan. 22, I have not been able to reply to emails thru my roundcube email client.
I dbl click on the email in my inbox, type my response and hit send.
I then get an error message that says The page http://ritchmillerart.com:2095 says: Please enter sender e-mail address.
so I type in my email address and get another error:
missing end address in selected identity
in short I cannot reply to email.
I appreciate any help I can get with this, Thanks
Given the url you posted in the error I going to assume that your just using RoundCube install by your host provider, you should contact them for help.