My roomba will not stay connected to wifi.

I have replaced the battery, rebooted roomba several times and done the router reboot, all to no avail. I recently got a new charging block and that isn't helping either.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0