Travel after naturalisation application

[Alptsd]

Hi
I will really appreciate if you can help me to find the answers of the following questions:

1) i applied for the UK naturalisation application and seemingly i need to wait for Biometrics appointment as i have received an email from FES Appointment(UKVCAS) as follows: ``UKVI are currently assessing whether your application can be progressed via the IDV app. You can not book an appointment at a UKVCAS Service Point or use the IDV app until we contact you again.`` May i travel out of country between the naturalisation application and biometrics appointment?

2) If UKVI/UKVCAS accepts my biometrics submission thru IDV app, may i submit my
naturalisation application documents thru IDV app during my temporary absence from the UK? as i need to go to visit my parents for a couple of weeks and i may receive an email from UKVCAS to allow me using the IDV app while i am abroad.

Thanks in advance
Regards