Wish I could help. I assume from your wording you had buttons before that you can't access now? I had thought that in order to have buttons you had to create a seller profile or something. -- I just went back into an older personal account to see what I could see. Using chrome on Android, I first accessed desktop mode via the chrome browser drop down menu. If you're unfamiliar with this feature it's a great way to get more functionality from some websites with limited mobile browser functions. Forgive me if you already know all that. From there, I hit the little settings gear icon in top right. This made a secondary menu appear along the top, where "seller options" is over on the right side. That opens up a page where "PayPal buttons" is a clickable option. Not sure if this will work for you but it's the best I got.
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