We use
WhatsApp to contact you.
Please give us the mobile phone number which you downloaded the app.
If you don' have app please download from below
Apple store https://apps.apple.com/jp/app/whatsapp-messenger/id310633997
Android Play https://play.google.com/store/apps/details?id=com.whatsapp&fbclid=IwAR0PpKE_1z74sc8Q4kxnKQzFODOLmtRmNymvo8Bz6ZJOg5djNQDMvdHSt2c&pli=1