If you have experienced problems to fill in the Modelo 210 tax forms, for example, the Next button does not function, blanc page after you clicked on the Next button or the Select boxes does not function, then it is probably cookie related.
Cookies can sometimes interfere with the online tax forms, although the problem is often caused by a combination of cookies, cached files, browser extensions, and session management issues.
How Cookies Can Cause Problems
1. Expired Session Cookies
Many application forms use cookies to keep you logged in while completing the form. If the session cookie expires:
You may be logged out unexpectedly.
The form may reset.
You may receive an "invalid session" or "page expired" error.
2. Multiple Login Cookies
If you have several accounts on EasySpanishTax.com, cookies may confuse which account is active.
This can result in:
Wrong user details appearing.
Failed submissions.
Authentication errors.
Other Common Causes Mistaken for Cookie Problems
Browser cache issues
Ad blockers
Privacy extensions
VPN services
Antivirus web protection
Slow internet connection
Browser incompatibility
Mobile browser limitations
What To Do
First Step: Open the Form in Private/Incognito Mode
This is often the quickest fix because it starts with fresh cookies.
Chrome: Ctrl+Shift+N
Firefox: Ctrl+Shift+P
Edge: Ctrl+Shift+N
Clear Cookies for the Specific Website
Instead of clearing all browser data:
Open the website.
Click the padlock icon next to the address.
Select "Cookies" or "Site Settings."
Remove stored cookies for that website.
Reload and try again.
Try Another Browser
For example:
Chrome
Firefox
Edge
Safari
If the form works in another browser, the issue is usually browser-related.
Disable Extensions Temporarily
Especially:
Ad blockers
Privacy tools
Script blockers
Anti-tracking extensions
Enable Third-Party Cookies Temporarily
If the application uses:
Google Login
Microsoft Login
Payment processing
Identity verification services
allow third-party cookies for that site.
Avoid Having Multiple Tabs Open
Some application systems do not handle multiple active sessions well.
See our cookie policy
/ Björn Ingbrant