Tide are asking me to explain what I will be selling but I have not yet chosen my niche?

If Tide are asking you to inform them which products you are selling before opening your business bank account, you can initially guess a niche when they first ask to ensure that you can proceed with the opening of your account.

Then when you have decided on a niche and you are ready to trade, simply contact them again through the support option in the Tide App and tell them the correct niche that you will be proceeding with.