Why can't I find my GM on 1921 census? Any ideas?

[Cakepig]

My GM was born 1910.

1911 census- Parents plus 5 children (Inc GM as a baby)
1922 electoral register, I see only the parents at the address, same for the subsequent years.
1939 register- my GM has married my GF and her mother lives with them.

All around the same area, tried different name variations, don't appear to have travelled overseas (though I may need to delve further when I'm on the laptop). Any other ideas to explore? Struggling to see where she was between 1911 and 1921, I can't see her parents either, though her elder siblings appear to have married and moved on.

@Mia85

I couldn't find mine due to transcription errors either. Is there any way of submitting corrections? The one's I have found have been very odd transcription errors e.g. Pancy instead of Nancy. They are all completely normal names so even if the writing is a bit tricky they should have been fairly obvious.

There seem to be a very high number of transcription errors. I would say at least 50% of the entries I've looked at have some. I couldn't really understand how they happened as the writing was very clear to me. I was frustrated by the lack of a report function too.

I couldn't really understand how they happened as the writing was very clear to me. Exactly my experience .

I expect this won't be news but I have found the www.rootschat.com/forum incredibly helpful and full of people offering to look stuff up /interpret handwriting/ and help if you're stuck .

I suspect that they have released it knowing full well that there are many transcription errors, and that they are relying on people finding them and reporting the mistakes.

Much like when you are one of the first businesses to start using a new software upgrade. You find all the bugs for them.

So many transcription errors! I found 27 different spellings for the street my grandfather lived in.
I’ve completely failed to find my parents house. All houses 1 to 20 are there except no 14. I’m trying to avoid paying for no 13 and looking for the next in line.