Read this and you will understand all about SSID broadcast and MAC filtering. In addition to the false sense of security, you have already seen the potential practical downside to disabling SSID broadcast; it doesn't work very well.
Huawei P10 review
1995-2015: How technology has changed the world in 20 years
An overview: What leading creative agencies are doing to improve diversity
New iPad, iPhone SE & Red iPhone 7 on sale now
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.