I have submitted several bug reports to the author of Websend (the plugin that does all the interface with the website, shop, deposit etc) which have all been fixed now, and a new version of Websend was released. I have installed it and I am currently working on enabling the handling of Banners in-game.
The issue is that they need to be stored in the tables and I want to use the field that is also used for enchantments so I do not have to create another field in each table that I am using. So I have to go through the code and change the way enchantments are handled and rather convert code that was specific for enchantments to a rather unspecific ‘extra data’ type of process. There are more than 370 places in the code where enchantments are handled, so there is a bit of work ahead.
On top of that I am on a business trip, so I hope I can finish it soon, but no ETA yet. I found some time tonight and finished it, so Banners can now be offered in the shop, but just display as “x-layered banner”. Deposits should also work fine (same display though). If anyone has an idea how do display banners in an easy way, please let me know (custom names won’t work).