Cannot install - please help

[groston]

Here is what I did on my Pixel 7 phone:

• Downloaded the OverlayFS zip file from here
• Uploaded the zip file to https://www.sisik.eu/zipalign ignored the 'Verification FAILED' warning, and clicked the Align button
• Using X-Plore created the user folder NewExt
• Using ConnectBot, confirmed that NewExt's settings are the same as every other user folder
• Using MyPhoneExplorer, copied the aligned zip file to the folder NewExt
• Opened Magisk, clicked the Module icon, clicked ‘Install from Storage’, clicked the X-Plore icon, checked the newly copied zip file, clicked OK, and then OK (in the Install Confirmation’ pop-up).

However, Magisk reported ‘Copying zip to temp directory, Unzip error’. I have no idea what to try…