Some are restricted.

You know what, I figured it out. Anyways if you have the same question, just reply and ill tell you what worked for me.

I'd like to know please (´-﹏-`；)

Well for me I couldn’t access the ones that I didn’t start reading. If they were in my “want to read” it showed up restricted but if they were in my “reading” it wasn’t restricted. I hope this helped. (๑•ㅂ•)و✧

Although I think it only works with certain ones with those you could try bookmarking them.

Thank you very much I'll try that right away
o((*^▽^*))o