If an entity required by Section 10A-1-5.31 to designate and maintain a registered agent fails to do so, or the registered agent cannot with reasonable diligence be served, the entity may be served with process as provided by the Alabama Rules of Civil Procedure and may be served with any other notice or demand required or permitted by law to be served on the entity in a manner similar to the procedure provided by the Alabama Rules of Civil Procedure for the service of process.