Hi freya128, thanks for your post.
At the moment, 5.36.0, 5.37.0, and 5.38.0 are the only eBay apps that support Android 5.1 (API 22). You might not be able to upgrade to a later eBay app version on these devices. On the other hand, 6.9.6 is the only eBay app that supports Android 6.0 (API 23).
Alternatively, you can use the browser of your smartphone to use eBay in case you are unable to download the latest version of the app.
Thank you,
Marco
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