SEO – problem by products

Dear all, first my configuration: WordPress: V5.3.2 Catch Evolution Pro: V3.6 Catch Evolution Pro Child: V3.1.1459883534 Database mysqli: V5.6.45 Homepage: https://www.astrolive.ch I am using Catch Evolution Pro since more than 3 years with full satisfaction. Now i'm strong implementing a new SEO-plugin (Rank Math, before i was using Yoast but the errors were the same!) and during a periodical monitoring of Google Search console (Webmaster tools), this tool recognized some errors related to the offered products of the online-shop. The notification error is: "You have to specify "offers", "review" or "aggregateRating". I really don't understand where i can take action. More forums say that the theme may be responsible of this status. Perhaps the problem is known. I would very appreciate if you can help me further. Thanks a lot in advance Bye Ernesto