The problem is caused by ec-optimizer.com being blocked by the DNS filter. I have confirmed that adding the below rule to the DNS user rules resolves the issue.
Send Do-Not-Track header, Hide your Referrer from third-parties, Hide your User-Agent, Remove X-Client-Data header from HTTP requests, Self-destructing third-party cookies (180), Self-destructing first-party cookies (4320)
DNS filtering:
server: System filters: https://filters.adtidy.org/android/filters/15_optimized.txt
Filters:
Ad Blocking: AdGuard Base, AdGuard Mobile Ads
Privacy: AdGuard Tracking Protection
Social Widgets: AdGuard Social Media
Annoyances: AdGuard Cookie Notices, AdGuard Popups, AdGuard Mobile App Banners, AdGuard Other Annoyances, AdGuard Widgets
Issue URL (Incorrect Blocking)
https://ec.f-gear.co.jp/item_list.html?keyword=%E3%83%AC%E3%83%B3%E3%83%81
Comment
Screenshots
Screenshot 1
![Screenshot 1](https://cdn.adguard.info/sitereports/smrda9869b4gc8ocs4okc8kkss8os881s49vo4kryr.png?nc=1)Screenshot 1 with AdGuard disabled
![Screenshot 1](https://cdn.adguard.info/sitereports/cpanwy3aqk0swg44cksc0840ksgkwo8o6wqq0a4q0g.png?nc=1)System configuration
Hide your Referrer from third-parties,
Hide your User-Agent,
Remove X-Client-Data header from HTTP requests,
Self-destructing third-party cookies (180),
Self-destructing first-party cookies (4320)
System
filters:
https://filters.adtidy.org/android/filters/15_optimized.txt
AdGuard Base,
AdGuard Mobile Ads
Privacy:
AdGuard Tracking Protection
Social Widgets:
AdGuard Social Media
Annoyances:
AdGuard Cookie Notices,
AdGuard Popups,
AdGuard Mobile App Banners,
AdGuard Other Annoyances,
AdGuard Widgets
Security:
Online Malicious URL Blocklist
Language-specific:
AdGuard Japanese
https://userscripts.adtidy.org/release/disable-amp/1.0/disable-amp.meta.js