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Thanks for reaching out.
Were the filters synced to Lightroom Cloud?
Log on to Lightroom Web (https://lightroom.adobe.com) & check for all the images and filters that have synced & uploaded to the cloud.
You can check this and try the steps suggested: https://helpx.adobe.com/lightroom-cc/using/lost-photos-presets-lightroom-mobile.html.
Let us know how it goes.