I tried all the things, and finally I found a htaccess file unkonwn until now in “uploads” folder ¿¿?? with a strange redirection. I have downloaded and deleted both files (.htaccess and -htcaccess). Connections files works again. I don’t understand nothing, but all is ok now. If this explanation solves anyone problems, … Regards.
I still waiting for the new and better connections plugin. Regards