Why have my online optician store's collection pages been removed from the index?

[seanysean]

Hi

www.pretavoir.co.uk + www.pretavoir.us

We run an online Opticians store and retail more than 100 brands.

Virtually all of the 'collection' pages eg ray ban sunglasses, oakley glasses are no longer in the index.

Also, other collections such as kylie jenner sunglasses have dropped, in this case from position 1.

The issue is not affecting 'pages'

I would appreciate any help / suggestions?

Sean

[Matt152]

Did you find an answer to this question?

Same thing has happened with me. Lots of collection pages, product pages and keywords have suddenly vanished off page 1. Google has suddenly deindexed them all.

No changes to website have been made.

Anybody have any solutions? Has Shopify changed something?