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Source evidence

Javascript Error

SilentShield – Captcha & Anti-Spam for WordPress (CF7, WPForms, Elementor, WooCommerce) · support · 2026-05-30T12:41:00+00:00

SilentShield – Captcha & Anti-Spam for WordPress (CF7, WPForms, Elementor, WooCommerce) plugin evidence original source source API
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Conversation

support
ralfkerkhoff unresolved
Hi, as a long time Antispam Bee i was looking for something different and came across this fine plugin. The problem I have with this plugin: It lets me do 2 comments and from comment #3 it throws a “invalid captcha/Javascript error”. Tested with Vivaldi, Firefox and Chrome. Any ideas what happens here? Cheers Raöf The page I need help with: [ log in to see the link] Hi, nobody with an idea how to solve the Javascript error? BR Ralf Hi Ralf, thanks for the detailed description — it helped a lot! This isn’t caused by the captcha or JavaScript, but by the plugin’s IP protection / rate-limiting feature. Due to a bug in the timing calculation, from the 3rd submission on it incorrectly detects “submitting too fast” and blocks it — regardless of browser, because they all share the same IP. Immediate workaround: Plugin settings → IP protection. Either turn it off briefly, or set “Period between submits” to a small value (e.g. 5 sec) and raise “Max retries”. That makes the problem go away right away. We’ll fix the underlying bug in the next update. If an IP has already been banned in the IP settings, you can clear it via “Reset IP logs/bans”. Thanks for reporting it — we’ll get it sorted! Best Regards Marc Hi, thanks for the reply. Strange, becaue i have the IP protection not enabled. You can see the error if you try to comment for example this article: https://www.ralf-kerkhoff.de/grafik/on1-plugins-in-acdsee/ Without Javascript protection the math captcha works fine – with javascript protection on it throws therror. Cheers Ralf

Comments

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ralfkerkhoff 2026-06-03T15:06:00+00:00

Hi, nobody with an idea how to solve the Javascript error? BR Ralf

forge12marc 2026-06-04T13:04:00+00:00

Hi Ralf, thanks for the detailed description — it helped a lot! This isn’t caused by the captcha or JavaScript, but by the plugin’s IP protection / rate-limiting feature. Due to a bug in the timing calculation, from the 3rd submission on it incorrectly detects “submitting too fast” and blocks it — regardless of browser, because they all share the same IP. Immediate workaround: Plugin settings → IP protection. Either turn it off briefly, or set “Period between submits” to a small value (e.g. 5 sec) and raise “Max retries”. That makes the problem go away right away. We’ll fix the underlying bug in the next update. If an IP has already been banned in the IP settings, you can clear it via “Reset IP logs/bans”. Thanks for reporting it — we’ll get it sorted! Best Regards Marc

ralfkerkhoff 2026-06-04T20:12:00+00:00

Hi, thanks for the reply. Strange, becaue i have the IP protection not enabled. You can see the error if you try to comment for example this article: https://www.ralf-kerkhoff.de/grafik/on1-plugins-in-acdsee/ Without Javascript protection the math captcha works fine – with javascript protection on it throws therror. Cheers Ralf