@the1avi
Did you register your computing device? Some websites ask, if you would do so.
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In order to ease the network flow and web compatibility . . .
In a Brave Browser > New Window, go to: brave://settings/clearBrowserData
Examine all of the settings for all three tabs: Basic / Advanced / On exit
Be as sure as you can be, that the settings are arranged for your use of Brave Browser.
Set: Time range:All time
, when manually clearing (using tabs: Basic / Advanced).
Re clearing Cookies and other site data
- do that - it is a necessary step when trying to fix website access/rendering problems.
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In a Brave Browser > New Window, go to: brave://settings/cookies
Disable: Clear cookies and site data when you close all windows
Remove all: Sites that clear cookies when you close them
In the upper-right-hand corner of the window, notice the Search field. There, enter: capitalone

Scroll down to: Sites that can never use cookies
Be certain, there, that none of the listed sources for cookies are, or might be, sources related to the bank website.
While still at the Cookies settings page, find: Sites that can always use cookies
Click the Add button
Enter [*.]capitalone.com:443
as the site, but Do Not Enable :
Current Private session only
Including third-party cookies on this site
Click the Add button
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Next, in a Brave Browser > New Window, go to: brave://settings/content/javascript
In the upper-right-hand corner of the window, notice the Search field. There, enter: capitalone

Scroll down to: Not allowed to use Javascript
Be certain, there, that none of the listed sources for JavaScripts are, or might be, sources related to the bank website.
While still at the JavaScript settings page, find: Allowed to use Javascript
Click the Add button
Enter [*.]capitalone.com:443
as the site . . . but Do Not Enable :
Current Private session only
Click the Add button
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Next, in a Brave Browser > New Window, go to: brave://settings/security
Disable: Use secure DNS
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Do not use a VPN, for connecting to the bank - intending to Sign In.
Use a Brave Browser > New Private Window
But Do Not use a Brave Browser > New Private Window with Tor
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Site settings - tip
In a Brave Browser > New Window, go to: brave://settings/content/all
Use the Search field, for finding the existing Site settings for a domain. As a test of searching and finding the specific Site settings, enter: capitalone
The Site settings you see, are the same that result, by your Right-Clicking on the Padlock icon, that is located near the left end of the URL address field, when you visit: https://www.capitalone.com
- you would scroll down the resulting pop-down window . . . to the bottom, and select Site settings
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