Hotspot not recognized or connecting

Hotspot not recognized or connecting

Using a hotspot in a Restaurant to connect the yodeck.  I tested this hotspot in my office for a week with yodeck and all worked fine.  I bring it to the restaurant and it doesn’t see the hotspot.   It sees other networks, but none I can join.   Hotspot is saved as network in the system.  Did wifi wizard but hotspot doesn’t show up. Other devices can see and connect to the hotspot. I have no way to connect to Ethernet cable here at restaurant.  Anyone have any ideas?