[Affinity designer: export as psd without quality loss]

Hello,

My designer sends me designs as PSD files. Now I want to open them and make some small changes within Affinity Designer. Then I will send them to my web developer, to create my website. My web developer has only Photoshop not Affinity Designer. When I try to export the changed design to PSD, the quality suffers and it looks like the vecors became bitmaps. What do I have to use in the export settings to get perfect quality? 

Thank you very much for your help.

All the best,

Christian

[Text with outlines]

Hello,

 

I would like to create a text like the one in the attached picture. I know how to create the red text. Can you tell me how to create the white outlines? 

 

Thank you very much in advance!