Nobackupman

I act as a treasurer of a small school that is open only on Saturday mornings. We have used the basic PAYE tool for years to determine any tax and NI that we must pay on behalf of our teachers that we pay salaries to. I did this on my work laptop but I then lost access to this laptop (it broke down) without having made a backup (though it was on a setting for backups to made every week/submission) or having produced the key that one normally uses when transferring basic PAYE tool to another device. I have downloaded the basic PAYE tool on my new laptop and entered various requested information to gain access to our account. The system grants access (so it knows who we are) but no information on employees, past submissions etc is present. I don't know what to do and I have been in the waiting queue of the phone helpline for ages without getting a response. Ideally, I want our account to be updated for the information that must be backed up somewhere. Alternatively, I guess we can start the cycle again, ie, by asking for a new account to be generated and adding details for employees etc. As it stands, I am not allowed to make any changes for 2025/26 as it directs me to do things in each tax year from 2019/20 onwards which I do not want to do. Any advice or references to threads that already discuss this?