Yeelight light strip not connecting (SAYS LTE AT TOP)

I just received my light strip today and I’ve been struggling to connect it for more than a hour. Keep in mind that I’ve bought Yeelight bulbs before and they worked perfectly in the past and they still do today (it was more difficult though). So I followed all the steps. In the beginning, it connected to my strip in the WiFi list but suddenly it doesn’t. It says LTE when connected? Why is this? I’ve changed the DNS in my phone settings (does it need to be via router?), reset, logged out, changed servers and replugged my router. What can I do? My ID is: 6170949813