Getresponse Integration works, but throw red border error…

Hello, I hope this is the right place to ask… I’m using CF7 and getResposne integration plugin. When I try to send a subscribe form, I still get an error message. BUT the submission goes well to GetResponse system, my email apears there, I receive double-opt-in email etc. So, everything goes well, but that red error message keeps confusing my users. Log entire is:

[07/23/2019 1:53 PM] – STATUS : Contact Form 7 response: Mail sent OK | Getresponse.com response: Accepted – {“headers”:{},”body”:””,”response”:{“code”:202,”message”:”Accepted”},”cookies”:[],”filename”:null,”http_response”:{“data”:null,”headers”:null,”status”:null}}

What should I do? Should I change to SMTP server? Other normal CF7 forms are working fine.

sysinfo:

== Site Info
================================================
Site URL: https://pro.bureauveritas.pl
Home URL: https://pro.bureauveritas.pl
Multisite: No

== WP Configuration
================================================
Version: 4.9.10
Language: en_US
Permalink Structure: /%year%/%monthnum%/%day%/%postname%/
Active Theme: BV Pro 1.0.0
Show On Front: page

== WP Frontpage
================================================
Page On Front: BV Pro – Zawsze aktualne informacje. Zawsze PRO (#2)
Page For Posts: Historia (#2385)
ABSPATH: /pro/

== WordPress wp_remote_post()
================================================
Remote Post: wp_remote_post() works
Table Prefix: Length: 9 Status: Acceptable
WP_DEBUG: Disabled
Memory Limit: 40M

== Must-Use Plugins
================================================

== WordPress Active Plugins
================================================
AddToAny Share Buttons: 1.7.36
BackWPup: 3.6.9 (needs update – 3.6.10)
Better WordPress Minify: 1.3.3
Contact Form 7: 5.1.3
Contact Form 7 GetResponse Extension: 0.4.15
Contact Form 7 Shortcode Enabler: 1.1
Contact Form 7 Style: 3.1.8
Cookie Notice: 1.2.46
Custom Sidebars: 3.2.3
Disable Author Pages: 0.11
Display Categories Widget: 2.1
Duplicate Post: 3.2.2 (needs update – 3.2.3)
Easy Category Icons: 1.0.1
Elementor: 2.5.1 (needs update – 2.6.6)
Flamingo: 1.9
Kadence Toolkit: 4.9.2 (needs update – 4.9.4)
Menu Image: 2.9.1
OG: 2.7.5
Popup Maker: 1.8.8 (needs update – 1.8.10)
Recent Posts Widget With Thumbnails: 6.5.1
Smart Slider 3: 3.3.20 (needs update – 3.3.21)
Smush: 3.2.1 (needs update – 3.2.2.1)
Trending/Popular Post Slider and Widget: 1.3.2
WP Responsive Recent Post Slider: 2.1

== WordPress Inactive Plugins
================================================
W3 Total Cache: 0.9.7.5
Yoast SEO: 11.5 (needs update – 11.7)

== Webserver Configuration
================================================
PHP Version: 7.2.14
MySQL Version: 5.7.24
Webserver Info: IdeaWebServer/0.83.267 (like Apache)
OS: Linux v278.home.net.pl 4.0.6 brocade-gut/rosol #12 SMP Fri Jul 20 13:24:42 CEST 2018 x86_64

== PHP Configuration
================================================
Memory Limit: 512M
Upload Max Size: 64M
Post Max Size: 64M
Upload Max Filesize: 64M
Time Limit: 30
Max Input Vars: 1000
Display Errors: N/A
Display Errors: N/A
Host: v278.home.net.pl
HHost: pro.bureauveritas.pl
SName: pro.bureauveritas.pl
allow_url_fopen: 1

== PHP Extensions
================================================
cURL: Supported
fsockopen: Supported
SOAP Client: Installed
Suhosin: Not Installed

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