So, let me try to get answers:
Yes, WhatsApp supports templates, in fact, you have to use one initially when you contact a customer.
Hard to say. If you look here: Work with carousels in bot conversations - Genesys Cloud Resource Center, it says it is supported and then not 5 lines later it says it is not supported. You or others will have to test that. I sent a documentation review request to Genesys.
Yes, you can use the canned responses in Messaging flows when you use the Get Response in conjunction with the Auto Reply: Send Auto Reply action - Genesys Cloud Resource Center
Did you get your Template approved through Genesys: Get an approved WhatsApp message template - Genesys Cloud Resource Center
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Robert Wakefield-Carl
ttec Digital
Sr. Director - Innovation Architects
Robert.WC@ttecdigital.comhttps://www.ttecDigital.comhttps://RobertWC.Blogspot.com------------------------------