The VR mode of this application is based on the Google Cardboard SDK specifications. Therefore, depending on your VR headset and device, you may need to adjust the settings.
If you have already adjusted your field of view with the headset in place when you purchased your VR headset, you can leave it as is.
If you have not yet adjusted your field of vision, please first adjust your field of vision by using the QR code for VR headset adjustment found on the VR headset box, manual, or official website.
If the problem still persists, please contact the distributor from whom you purchased the VR headset or refer to the following URL to try it out.
・Pandaconote
Pandaconote explains how to deal with various problems. However, since the articles are written in Japanese, please check the contents by translating them if necessary. More information can be accessed at this link
http://note.pandako.com/2016/12/iphone-vr-youtubecardboard-android-ok.html
・VR Headset QR Codes:
This website contains a collection of QR codes for various VR headsets; by using the QR codes, you can get the best display for the VR headset you are using. Please note that the use of QR codes for different VR headsets is deprecated and should be used with caution. More information can be found at the following link
https://www.hypergridbusiness.com/faq/vr-headset-qr-codes/