To sign up in Appjobs Work, you have to use your existing Google, Apple or Facebook account. When done, we will remember which method you've used and assign it as default. This is a safety seal agains fraud.
If you wish to change your Google, Apple or Facebook account, you'll have to delete your current Appjobs Work account and sign up once again by another one. Read more about how to delete your account here: https://help.appjobs.work/help/how-do-i-erase-my-data-delete-my-account