Having problems with HC-05 and three relays
I don't see a problem with the code indicated for bluetooth; if that code is indeed ok, then probably you should look for hardware issues;  first, look for low +5V when multiple relays are turned on.  (Attach a voltmeter or a scope to +5, see if it changes when a second relay comes on, etc.)  Second, look (with a storage scope) for glitches when the relays switch.  If you don't have a storage scope, try testing with a separate power supply for the relays.  (Tie the grounds of things together, but give the Arduino and the HC-05 +V that's isolated from relay +V.)

More seriously, your code is overweight.  For example, replace

   if (relay1estatus == 0){
    digitalWrite(relay1, HIGH);
    relay1estatus = 1;
   } else {
    digitalWrite(relay1, LOW);
    relay1estatus = 0;
   }


with

    relay1estatus = 1 - relay1estatus;
    digitalWrite(relay1, relay1estatus);