struggling connect fo wifi

Hello, I am having trouble getting my ESP32 (LaskaKit ESPink Board) to connect to my WiFi.

Code are written with AI help, SSID and password are correct, after instal code ESP start connecting but immediately are disconnected from router.

Previously, I was running standard code to read a BME280 sensor, receive data from an external ESP with a BME280, and sync the time/date via WiFi. Everything worked smoothly.

Now, I want to use it to display calendar info on the e-ink screen, but I'm struggling to even get a WiFi connection. Any help would be appreciated!

Edit: Wifi is IoT 2.5g but before connect to my standard home wifi 5g/2.5g

esphome: 
  name: epaper-test 
  friendly\_name: E-paper Test 
esp32: 
  board: esp32dev 
  framework: 
    type: arduino 
# Povolenie logovania pre prípadné hľadanie chýb 
  logger: 
  api: 
  ota: 
    - platform: esphome 
 wifi: 
  ssid: "homeasistant" 
  password: "Ja a Emka" 
  fast\_connect: true 
# Nastavenie zbernice SPI (tieto piny sú najčastejšie pre LaskaKit ESPink) 
spi: 
  clk\_pin: GPIO18 
  mosi\_pin: GPIO23 
# Stiahnutie a nastavenie písma 
font: 
  - file: "gfonts://Roboto" 
    id: font\_test 
    size: 50 
# Nastavenie samotného displeja 
display: 
  - platform: waveshare\_epaper 
    cs\_pin: GPIO5 
    dc\_pin: GPIO22
    busy\_pin: GPIO32  
    reset\_pin: GPIO21 
    model: 7.50inV2 
    update\_interval: 120s