Keeping old number not working
Hello, I recently received my new ID sim. I wanted to keep my old number from GiffGaff however every time I go onto the app or use the weblink the app either crashes and goes back to my phones menus or the calendar date to select what date o want the switch from is unelectable. Please, please can someone help me. I have the PAC code and a to action code etc. I have even tried it on incognito on the browser and that doesn’t work.