"Out of Stock" and "On Sale" showing under products in collection, wrongly

[oliverk]

Hi,

Many of my customers are experiencing the issue on my store www.yetealeaves.com: on the Collections page, every product shows as "On Sale" and "Out of Stock" (respectively "Akciós" and "Elfogyott" in Hungarian, see attached picture), whereas they are in fact IN STOCK and NOT ON SALE. This causes them to think the product is not available at all.

Can you please assist? 

Thanks, Oliver