Sorry for my information, I though you have a bedside lamp of Gen 1, which is a bluetooth based device.
Since you can see an AP "yeelight-light-bslamp1_mibt3c20" from you wifi list, I think the wifi module is ok with the lamp. Next, you should open Yeelight app, in the tab of device page, click "Add" icon from right-top to add a new device. In the page of add new device, please select "Mi Bedside Lamp" instead of "Bedside Lamp". In the next page, click the lamp that app discoveries, select a wifi... please have a try.