Double-check, did you download a flow or a landing page? The flow is downloaded from the flow settings, and the landing page from the offer card. The links used in this case will differ: for a flow, you use the flow link, and for a downloaded landing page - a link consisting of the domain name (the address where you uploaded the landing page).
The difference between uploading a flow and a landing page is described in the
guide.
Did you link a domain to the uploaded flow? If you are uploading a flow (or a landing page) to your own hosting, in this case you cannot park the domain with us (and you do not need to link a domain in the "Domain parking" field in the flow settings).
The domain must be parked to your hosting where you upload the flow (landing page).
Were all flow files extracted correctly? Sometimes, when flow files are extracted incorrectly, some of them are lost (or the onepage folder, which contains all the landing pages, did not copy). Try extracting the files on your computer using a different archiver (for example, WinRAR), and upload the extracted files to your hosting using an FTP client, for example, FileZilla.
Which folder on your hosting is the flow uploaded to? The path specified in the flow settings must match the address where you upload the flow. If the addresses differ, the flow will not work correctly.
Is PHP support enabled on the hosting? What version of PHP is used? All our landing pages run on PHP - the PHP version must be no lower than 5.5, the recommended version is 7.
Is the rule allowing opening external sources specified in the php.ini file? (Error 500)
On some hostings, opening external sources is disabled by default. All rules under which PHP operates are specified in the php.ini file (most often located in the root folder of the hosting).
To allow it, you need to change allow_url_fopen = Off to allow_url_fopen = On
Seeing incorrect encoding on the landing page? When uploading a landing page to hosting, unreadable characters may appear instead of text.
You need to open the landing page file index.php in Notepad++, change the file encoding from BOM to UTF-8, and save it. After that, upload the landing page to your hosting.
A file downloads instead of redirecting to the landing page? When uploading a landing page to your own hosting, enable PHP support on the hosting.
On some hostings, it is disabled by default. You should look for it in the hosting or plan settings.
Setting up a redirect via HTML? Make sure that the link specified in the <meta http-equiv ... > tag opens in the browser. To do this, you need to select the link without the code and paste it directly into the browser bar.
If the website does not open, you need to recreate the flow and ensure that the link opens.