Hello,
If you long press the WIFI button, the WIFI light on the IBS-M1 will not flash, but you can see the smartlife-xxx hotspot on your phone, this problem may be that the WIFI light is damaged, but the slow flash mode of the IBS-M1 will work.
Please check if the router settings are correct? Please check the settings according to this post and use the slow flash mode pairing, does it work?