Please, check the following:
1. The filter option must be added in your Filter Menu admin. If you didn't add the filter to the filter group in your Power Tools admin it won't appear on the frontend.
The filter option must not be hidden, you can tell a filter is hidden when it is "greyed-out", in the case it is hidden, click the "eye" icon to unhide it.
2. There must be matching products for that filter in the source collection. Filters are collection based, and if there are no products/results to show then the filters won't appear on the store.
A quick way to check the source collection is to click on the link in the "Source" column for the filter that doesn't appear on the frontend. This will open the associated collection in your Shopify admin, where you can check the collection has products in it and that those products are not hidden.
3. The collection must not be hidden or unpublished. In the case that the collection is hidden you should see this message for the missing filter.
4. The filters need to be updated. You may see a warning on the filters that don't show on the store. Note that filters that display any of these warnings will not be shown on the store until they have been fixed.
There are a few types of warnings:
'Sync tags'
'No Matching Collection'
'Collection rule must be updated'
5. You have too many tags in use.
The Filter Menu uses product tags to generate your storefront filters. Shopify makes up to 1,000 unique tags available per collection page, so having more than this can cause some filter options to disappear. If you have too many tags you should see a warning at the top of the Filter Menu admin page.
To remove tags you no longer need, follow our guide: What to do if you have too many tags.
If you have any additional questions, please contact support through the live chat in the app, or at support@powertoolsapp.com