I’ve already been where you are now
As far as I remember you need a top level album in your Google Photos library to be able to import that into Mylio using “File-Import-Online Services” route - so you’d need to create a dummy one and have all the photos moved into that album.
There is however a different method - which I would recommend for dealing with larger media collections. It revolves around using Google Takeout feature.
- You simply log in here → https://takeout.google.com/
- Select Google Photos from the list
- Specify size/format of your archive and wait for it to get created
- Once the prepared .zip file is downloaded from Google you can unzip it and find your pictures in a folder organization that can be brought right into Mylio via the Copy import feature or even moving them right into the Mylio Pictures folder on your computer.
In addition I would recommend making sure your photo timestamps are correct. I had some issue with that and it’s to do with the fact some photos don’t have that piece of metadata embedded directly in the files.
Google uses .json files to store that (and some other) info in those external files and from what I understand Mylio doesn’t handle that at the moment.
Easy fix is to use free tool named ExifTool to have that data “baked in” to the original image files.
Plenty of instructions available on the web, for example → https://exiftool.org/forum/index.php?topic=10409.0
I know from Mylio support (thanks Michael ) that they are working on a way to digest the Google Takeout .zip file through a new and improved import tool coming in the near future.
Hope this helps