Interesting.
Maybe it could be some packet issue but … from Cloudflare Status page, I do not see any issue.
May I ask did you used Cloudflare WARP / 1.1.1.1 in between or not?
Could it be due some Web browser cache on your devices? Have you tried clearing it?
Pastebin - is that your domain which you manage and control, or you received this error while visiting it?
Due to the 525 error, kindly, may I ask have you checked within the steps from below articles regarding this error showing up for your Website?:
It should have to be something with SSL certificate at your host/origin and Cloudflare SSL options.
May I ask, before moving to Cloudflare, have you had an SSL certificate at your host/origin server for your Website and was your Website working over HTTPS connection?
May I also ask what SSL option have you got selected under the SSL/TLS tab of Cloudflare dashboard for your domain? (Flexible, Full, Full (Strict) ...)
Here is a way to re-check if you correctly setup the SSL for your domain with Cloudflare:
If any other issues appear, follow the needed steps for troubleshooting from article below:
Regarding available SSL options at Cloudflare dashboard, check here:
In case you do not have an SSL certificate, you can use Cloudflare SSL, if so, kindly make sure you follow the instructions as follows on the below article to setup an SSL certificate using Cloudflare CA Origin Certificate:
proxy mode being enabled for your domain. The list of the compatible and supported ports when using