Hi @val5678, and welcome to the Open Targets Community! 
We recently deprecated the Open Targets Genetics web interface (genetics.opentargets.org), following the merge of Open Targets Genetics with the Open Targets Platform. You can read more about this decision in this post.
This means that variant, credible set, and study information is now available to browse in the Open Targets Platform: platform.opentargets.org
(You can still access Open Targets Genetics data through the EMBL-EBI FTP, but I should stress that the data has been superseded by the merged Open Targets Platform, which contains much more up to date information.)
However, as one of my colleagues explained in this post:
We’re currently focusing on gene assignments for associations at the credible set level, so if you’re starting with a specific variant, you’ll need to scroll down to the bottom of the variant page and find an associated study or trait. From there, you can explore gene assignments via L2G scores, as well as individual molecular QTL colocalisations within the credible set.
We have a detailed documentation as well as a recorded intro webinar to the merged Platform. Let me know if you have any specific questions about the Platform that I can help with.