Google photos are still a mystery to me. Here's the URL that doesn't show the photo: (spaces added to make it not a link)
https:// lh3.googleusercontent.com/hElF4PuS77rVI-A2BbUjaMR5lbTfpKVx6WnNnrvTRnOS0P_HhjdiGl437PlVorvYZU2KsDszppEsDM85wE2fOctOj-HLyE-fosEpw7DCLkIjm4WCPLQUFHRmzNgfR4IzTUp1x6ArYQo33a5pSYnvg1tH7jZKscb6s37ZpEBtCC391yTPbJVoaZ0ZetJXkvdE8J-YGQRAxPic_ljdGKoAGve5eKmyjSeUfQ0dsENqq_Am0Vuym6VyTvFWtWRx8dPACBZTeTFgITcarzdiUXowMnkQAJ0Ou3-liz6qaOqSXAgPY6q1_9m-tQhqgJ-HaseZ_nQWwEDuD7JsAiu0dWfzuY2eIwuhlDaaBS1IRJoiByd7VW1jk0X_CqWwMwbQk-cW8M8ExpTC8_wSkOwxz48Q476x_W7-VFaxF-u4cqjszciA4tN3MfuoC0FGY7f13ONXEzqc07bMAROkAtzCyjOVd55ffEZavRxXYTJZGBlM9o_EtsO4MWC_1TSf3ta8hbO7Td_jHQc1dPpgYazIPLNLp0Kl-0lMZdZVV05gvMfVu_9nrCuZdLV_HPoHwA=s1598-w1598-h1198-no
A bit long and obscure, no?
Here's another way of expressing what may work: Once your photos are on a photo hosting site (such as Imgur.com; Postimage; Dropbox, etc. Photobucket), or on virtually any site, including this site's album such as eBay, Amazon, you-name-it, select the full sized image, then Control-click (Mac) or Right-click (Windows) on the image itself, then choose copy image location. Now paste that URL (the full web address, which should end in .jpg) into the IMG box in the reply window of the thread you're posting to.
The site's album is also a good choice for displaying photos.
Will that work for your photo? I can't say for sure, but please do try it!