Dear bicycle tourists ... When you are planning to be a guest at the home of a Warmshowers host, please plan your trip in advance (as far as possible, at least a few days). Contact the hosts you want to visit already in your planning stage.
When you contact a host when you're already on your way, like "I'm riding in your region at the moment, please can I be your guest tonight?", you can be disappointed because the host doesn't answer you. Or when you come at their door, they aren't there. Not everyone reads their messages all the time, so they might not know you are coming.
If you did contact possible hosts in advance, not for fixing the appointment, but just for planning, then you know if they are available. You can still change your plans, f.e. when certain hosts are not available. And the chosen hosts are prepared to receive you as their guest. You can ask them for their phone number so you can phone them at the day you will be arriving.