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Didn't they give you a specific deadline? Because honestly if it's just a matter of getting your photos before you lose access, the easiest thing is to download your Google Takeout archive - you go to takeout.google.com, check Google Photos, and it creates a file with all your images. It takes a bit of time depending on how many photos you have, but it's really the most reliable way to get everything locally. If you just want a few specific photos, you can also select them directly in the app and download them one by one, but yeah that's a pain if you have a lot.
Don't panic and whatever you do, don't count on Google to give you a friendly reminder before your photos disappear - you've gotta take matters into your own hands. Google has strict rules about account inactivity and they're not really gonna warn you before deleting your data, so you need to act now if you have photos you actually want to keep.
To download your photos, the easiest way is to use Google Takeout. You go to takeout.google.com, log into your Google account, and then you select Google Photos from the list of services. You can choose to download all your photos or just the ones you need. Google will create a zip file for you to download - it's free but it can take a while if you have thousands of photos. Once you have the file, you can store it on an external hard drive, on your own cloud storage (like OneDrive or Proton Drive), or both if you really don't want to risk losing everything.
There's also the Google Photos mobile app that lets you download your photos individually, but honestly if you have a lot it's really annoying to do one by one. Takeout is still your best bet. One tip: once you've got your photos back, make a backup copy somewhere else - I lost stuff by trusting just one place and it's not fun. After that you can breathe easy, haha.
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