For a lot of people, a project is more than a set of tasks with the team members assigned to work on them. You may need to track issues or risks or a process to decide which projects even get fun...
Robert Woods and I have been working through some additional issues after installing Accelerator for Project for the Web. It feels like every time we fix one issue we find another one. We had the Wicresoft solution and eventually removed it so we could install Accelerator. We had some issues with getting Accelerator installed, as Robert Woods mentions above, but now it is installed. However, we've noticed duplicate fields through the Power Apps interface of Accelerator. We've been able to clean up some that were clearly duplicate fields. But there are a couple (Business Case and possibly Financials) that have the same field name but are not actually duplicates so now we aren't sure which fields are the correct ones.
At some point it might be good to know if we can completely remove Accelerator and get Project for the Web back to a stable state but for now we are working with a Dynamics Support rep to see if we can get our environment back to a working order.