Hi, I have the same problem.
Also, clearing all markers doesn’t work. The markers remain on the map. Please fix this quickly.
Hi @c3db003ixb826, welcome to Thunkable! 
I moved this into a new post because it is a different issue.
I have created a new project with the delete all markers block, and it works when I test it: https://x.thunkable.com/projectPage/68e93a45c16f548fdb16873e
Could you please share the screenshots of the blocks that you are using to create and remove the markers?
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I tested it with your project, but not all markers are removed. The [deleteAll Makers] block used to delete all markers, but now only one is deleted. The same problem occurs in additional projects I tested Thunkable
