I have a i-clever IC-BK10 keyboard. It works perfectly till recently my phone has some issues so I have tried to reset all the setting including bluetooth, so I have to pair all the devices again one by one, and that is when I recognise that I cannot add my keyboard anymore.  I charged it fully. I tried Ctrl + Q, Fn + C, I also reset the keyboard using fn+left shift+backspace and tried pairing again, but it is not discoverable on my Android phone (samsung note 10+) and the keyboard doesn't show up in the Bluetooth devices on my pc or any other mobile phones. (During the trial on my phone, I did see only once the keyboard appear and I press pair but after that it does not show up and how many times I tried again, I never see it anymore).

How could I solve this, please?