Signing PDF documents (Adobe Reader, Adobe Acrobat) using a qualified electronic signature SimplySign It's very simple. The whole process takes about a minute. Below, we've included a video and detailed instructions on how to do this on a computer.
Nevertheless, if you intend to buy SimplySign from us, don't bother - we'll help you install the signature and show you how to sign documents 
What is needed to sign a PDF with SimplySign:
Signing a PDF document:
Below is a video showing the entire process of signing a document on a Mac, and below it is a detailed description of all the steps, along with screenshots. We suggest - watch the video, and then sign the document, step by step going through our instructions. If you have any doubts contact us. We can help
Before you start signing documents on your computer, make sure you are connected to the Certum cloud. On a Mac where SimplySign Desktop is installed, select the Certum Cloud icon from the system's top navigation bar and click the „Connect to Cloud” option.
If you do not see such an option, it is likely that SimplySign Desktop has not been installed on your computer or has not started at startup. To solve this problem, use the Certum help by clicking the link below.
If for some reason you don't have your login information or can't log in, please contact Certum. The link below will redirect you to their contact information page.
Confirmation of successful login to the Certum cloud is the message that will be displayed on your computer. Now you can close this window.
If you don't see such an icon, type the name of the program into the Spotlight search engine or find it in the list of applications. If you can't find it, most likely you don't have this program installed on your computer, in which case use the link below.
In the lower left corner there is a button „Add file”. - click.
When you open the „Search in:” window then you have the option to search the contents of your computer or the cloud to find your file to sign. Select the folder where the files you want to sign are located.
Now you can add the documents you want to sign. It does not have to be just one document. You can sign multiple documents at the same time. However, if you want to add graphic visualization of the signature on them, they must have the same layout. Otherwise, you have to sign each document separately.
Once you have selected the documents to be signed, all you have to do is click the green „Sign” button located in the lower right corner.
After clicking on the „Sign” button, there is a phase of searching for your certificate. It will be found thanks to the fact that you logged into the Certum cloud in steps 1 and 2.
