@GoldenThread I think the CryptPad team is overwhelmed with feature requests - like any open source project - so I'm not sure if and when you get feedback. But I would suggest to post some additional information, so that the feature request is also understandable when it gets viewed in the future:
1) Which limit did you experience? 10 items? 20? 30?
2) Perhaps describe your use case. 50 items is a lot, usually one would not create such a questionnaire, because a notable amount of users would not answer such a lengthy block. On the other hand of course I see no reason to make a low limit, I hope you could do at least 20 items technically. (Personally I would create a new block after 8 -15 items and restructure the questionnaire to be able to do so).