I like the look of the 20” Crete self watering planter but it is not as advertised. The picture shows a plug on the rim of the planter to allow to add water to the reservoir. This is missing on the planter, so how do I add water once I have planted? I have called Algreen, the company that manufactures these planters, twice and have left a message twice ( their card along with a telephone number and name of a representative was included with the order ) but have never heard back. I would like to speak with someone about this, please advise. Question: have you heard from anyone else about this?