Hi,
17 of my 34 sites are suddenly disconnected (yesterday everything was normal).
When I go to the site settings and press “Test Connection”, I see a success. I can also assign, test and save a Unique Security ID.
The sites are set up to use https:// (in the settings).
However, “Reconnect” will fail. I briefly see an error message at the top of the screen before MainWP reloads, saying “MainWP Child plugin not detected or could not be reached! Ensure the MainWP Child plugin is installed and activated on the child site, and there are no security rules blocking requests. If you continue experiencing this issue, check the” (this is where the message is cut off).
I’ve gone through some old forum posts but the error messages were different and/or the suggested fixes don’t apply to this situation. What are my next steps? Thank you 
WordPress Check Required Detected Status
FileSystem Method = direct direct Pass
MultiSite Disabled =true true Pass
WordPress Memory Limit >=64M 40M Warning
WordPress Version >=3.6 6.1.1 Pass
PHP Required Detected Status
cURL Extension Enabled =true true Pass
cURL SSL Version >=OpenSSL/1.1.0 OpenSSL/1.1.1p Pass
cURL Timeout >=300 seconds 60 Warning
cURL Version >=7.18.1 7.84.0 Pass
PCRE Backtracking Limit >=10000 1000000 Pass
PHP Allow URL fopen N/A YES
PHP Disabled Functions N/A No functions disabled.
PHP Exif Support N/A YES ( V7.4.)
PHP IPTC Support N/A YES
PHP Loaded Extensions N/A Core, OAuth, PDO, Phar, Reflection, SPL, SimpleXML, Zend OPcache, bcmath, bz2, calendar, clos_ssa, ctype, curl, date, dom, exif, fileinfo, filter, ftp, gd, gettext, gmp, hash, i360, iconv, imagick, imap, intl, ionCube Loader, json, libxml, litespeed, mbstring, mysqli, mysqlnd, openssl, pcntl, pcre, pdo_mysql, pdo_sqlite, posix, readline, session, shmop, soap, sockets, sqlite3, standard, tokenizer, xml, xmlreader, xmlrpc, xmlwriter, xsl, zip, zlib
PHP Max Execution Time >=30 seconds 30 Pass
PHP Max Input Time >=30 seconds 60 Pass
PHP Memory Limit >=128M 256M Pass
PHP Post Max Size >=2M 8M Pass
PHP Safe Mode Disabled =true true Pass
PHP Upload Max Filesize >=2M 2M Pass
PHP Version >=7.0 7.4.33 Pass
PHP XML Support N/A YES
SSL Extension Enabled =true true Pass
SSL Warnings = empty Pass
MySQL Required Detected Status
MySQL Client Encoding N/A utf8mb4
MySQL Mode N/A ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
MySQL Version >=5.0 10.3.37-MariaDB-cll-lve Pass
Server Configuration Detected Value
Accept Content text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,/;q=0.8,application/signed-exchange;v=b3;q=0.9
Accept-Charset Content N/A
Architecture 64 bit
Gateway Interface
HTTPS ON
Memory Usage 5.58 MB
Operating System Linux
Request Time 1674853202
Server Protocol HTTP/1.1
Server self connect Not expected HTTP response body:
Server Software LiteSpeed
User Agent Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36
MainWP Dashboard Settings Detected Value
Abandoned plugins/themes tolerance 365
Basic uptime monitoring enabled Yes
Cache control enabled No
MainWP Dashboard Version Latest: 4.3.1 | Detected: 4.3.1 Pass
MainWP legacy backups enabled No
Maximum number of pages to return
Maximum number of posts to return
Maximum simultaneous install and update requests
Maximum simultaneous requests 4
Maximum simultaneous requests per ip1
Maximum simultaneous sync requests
Minimum delay between requests 200
Minimum delay between requests to the same ip1000
Number of child sites 34
Optimize for shared hosting or big networksNo
Plugin advanced automatic updates enabledYes
Primary backup system MainWP Legacy Backups
REST API enabled No
Site health monitoring enabled Yes
Theme advanced automatic updates enabledYes
Use WP Cron No
WP Core advanced automatic updates enabledYes
Extensions Version License Status
Advanced Uptime Monitor Extension 5.2.2 Actived Pass
MainWP Domain Monitor Extension 4.0.1 Actived Pass
MainWP Sucuri Extension 4.0.13 Actived Pass
MainWP White Label Extension 4.1.3 Actived Pass
MainWP WooCommerce Shortcuts Extension4.1.1 Actived Pass
WPvivid Backup MainWP 0.9.28
Plugin Version Status
MainWP Dashboard 4.3.1 Active
WPvivid Backup MainWP 0.9.28 Active