# FAQs
How to customize the button style?
By default, the application uses the website theme's styles. If you want to customize the quote button style, follow these instructions:
* For product page: Go to **Online Store** -> **Themes** -> **Customize** -> Select "**Product**" in the top selectbox -> Select a product template -> Select Quote app block in the left menu -> Edit quote button style
* For collection page: We have to customize with CSS code. Please go to **Settings** -> **Custom Styles** -> Paste the CSS code (*can contact us for help*)
How to set it up so that only logged in customers can see the prices?
Please read this guide: How to set it up so that only logged in customers can see the quote button?
Please read this guide: Why do I not receive an email notification when the quote form is submitted?
The cause of this problem may be that you have not set up the receive email field and the response email field in **Email Settings** (Go to **Quote forms** -> **Edit** form -> **Email Settings**):
If you have done the above step but still do not receive notification emails, you need to do an additional step of configuring SMTP for the app (go to App backend -> **Settings** -> **SMTP**).
**Please note: to configure SMTP for the app, you need to enable 2-factor authentication for your account and create an alternative password (app password), which will be filled in the password field in the app's SMTP menu.**
If you are using Gmail, you can refer to the following instructions: Why does the email notification content not display data fields but display short-codes?
The reason for the problem is that the pre-filled short-code in the email content is just a sample short-code and it can vary from store to store. In the backend app, go to **Quote Forms** -> **Edit form** -> **Email Settings** -> **Email content** -> Reselect the required fields using **Select box**
Why does the RFC error appear after submitting the form?
The cause of this error is that you chose the wrong value of the Submitter Email Address field in **Email Settings** (**Quote forms** -> **Edit form**). Please check and set the correct value for this field.
How to set up multi-language quote button in product page?
* Enable Use Multi Language for quote button ( go to **Themes** -> **Customize theme** -> **Products** -> **Product template** to do this)
* In app backend, go to Settings -> **Translate** -> Add other languages besides default language.
In the notification email, the product table does not show product details, what should I do?
This issue usually occurs with Outlook, and is caused by Outlook blocking the display of hyperlinks. To troubleshoot the issue, you can refer to the six links:
