You might want to take a look at this thread and see if that helps.
https://www.digi.com/support/forum/72821/anywhereusb-2-g2-factory-reset-default-username-password?show=72821#q72821
AnywhereUSB documentation
https://www.digi.com/support/forum/72821/anywhereusb-2-g2-factory-reset-default-username-password?show=72821#q72821
products manufactured since 2020 will have a unique default password which is printed on its label, see: https://www.digi.com/support/knowledge-base/unique-default-passwords-for-digi-products