# Missing blocks and unhelpful tutorials

**URL:** https://community.thunkable.com/t/missing-blocks-and-unhelpful-tutorials/2395628
**Category:** Questions about Thunkable X
**Tags:** firebase, design, beginner, blocks
**Created:** [April 28, 2023, 10:13pm UTC](https://community.thunkable.com/t/missing-blocks-and-unhelpful-tutorials/2395628 "2023-04-28T22:13:02Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![mpr2609](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/mpr2609/32/150893_2.png) [@mpr2609](https://community.thunkable.com/u/mpr2609)
#### Post date: [April 28, 2023, 10:13pm UTC](https://community.thunkable.com/t/missing-blocks-and-unhelpful-tutorials/2395628/1 "2023-04-28T22:13:02Z")

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I’ve been watching/reading all the tutorials on sign in/sign up functions but each tutorial seems to use blocks that no longer exist or can’t be found. The register screen in [4. Build an app that allows users to register/login using Thunkable - YouTube](https://www.youtube.com/watch?v=3wmepEPmjSg) features a ‘CALL THEN DO’ block that I just cannot find. Help!

Michael

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### Author: ![tatiang](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/tatiang/32/55482_2.png) [@tatiang](https://community.thunkable.com/u/tatiang)
#### Post date: [April 28, 2023, 10:41pm UTC](https://community.thunkable.com/t/missing-blocks-and-unhelpful-tutorials/2395628/2 "2023-04-28T22:41:31Z")

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Those have been replaced in the Drag & Drop interface with Firebase Sign Up and Sign In blocks:

 ![image](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/4/1/41ae0ab480253e8cdfb9f6039a425e9c019edef3.png)

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### Author: ![mpr2609](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/mpr2609/32/150893_2.png) [@mpr2609](https://community.thunkable.com/u/mpr2609)
#### Post date: [April 29, 2023, 8:08pm UTC](https://community.thunkable.com/t/missing-blocks-and-unhelpful-tutorials/2395628/3 "2023-04-29T20:08:24Z")

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I think for the most part, right click on a block and select advanced version.

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### Author: ![system](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/0/f/0f59f292712368bce16ff80133ae10de8a6f27e8.png) [@system](https://community.thunkable.com/u/system)
#### Post date: [July 28, 2023, 8:08pm UTC](https://community.thunkable.com/t/missing-blocks-and-unhelpful-tutorials/2395628/4 "2023-07-28T20:08:31Z")

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