Google is Deindexing all my shopify pages because of the robots.txt file blocking how do i stop this

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Hi There,
The robots txt is defo blocking some URLS,

i am at a loss though, i can’t figure this out.

my URL was ranking on page 1 for keyword “nicotine shots”
url is - https://www.mistervape.co.uk/collections/nicotine-shots

this page is now deindexed by google and it tells me my robots text is blocking it.

I have now everyday more and more pages getting deindexed. traffic is dropping at the same time.

i just can’t figure this out.