Change text on checkout and white box on the right side of the site

-- url of the page with the problem -- : www.time-for-you.be
-- HikaShop version -- : 6.3.0
-- Joomla version -- : 5.4.3
-- Browser(s) name and version -- : Firefox

Hi,

Yesterday I worked on Hikashop and everything went normal. When I opened the site todat they was a big white box on the right site. I don't know how it got there. I don't know if there is a link wirth Hikashop but I think so. Can somebody tell me what it is and how to remove it?

At the end, when the checkout is done for manual payment costumers get a screen with all information how to transfer money. But now this is the standard text. I cannot find where I can change that text. I also would like that the costumer receives an email with all thiss information. So how or where can i change the text and how do I get Hikashop to send a final mail to the costumer with all the needed info to do a money transfer?

Thanks for your help.

In attachmene the text with info the costumer gets after chekout. I want to change this text and I want it also send by email.

Thanks for this info. I could resolve the problem about that area.

But I cannot find the way to change the info. Could you tell meexactly how to get there? Because I cannot find it.

And how can I let this info be send by email to the costumer?

Thanks

Ok thanks. Your pics are not the same as mine because of a different version but I found it.

Then one last question. How can it be mailed? Or is this not possible?