The easiest and best photo storage and sharing application is Google Photos. It can be used on any computer and more importantly, on any Android or Apple phone. All you need is a free Gmail account and the Google Photos app and then you have free and unlimited access to Google Photos.
If you have and use Google Photos, it's fast and easy to share photos with anyone, anywhere . . . including the Tennis Club.
If needed, here are a few instructions to help get you started.