You won't need to visit the proposals page for this particular proposal. It's one of the governance proposals so you just have to vote for the Yes comment (link points to sportstalk.social so you can sign in via old methods) on the proposal. If you still have issues on that site you can even vote for the comment via Peakd.com.

The other funding proposals for the STF (SPORTS Token Fund) are a bit different. For those you do have to be signed in via our new site or on TribalDex (Hive Engine's new site). If you end up still having problems let me know and I'll relay anything I can to the Hive Engine team until we can get you signed in again.

I see how having these two separate proposal systems can be confusing. To ensure a better understand of which proposal system is being used I'll start labelling posts with SPORTS Governance: when dealing with governance issues or SPORTS Token Fund Proposal: when dealing with funding proposals.