Hi everyone,
I was away for a few days, for urgent matters, and my colleagues were more than busy with important projects, so sorry for the inconvenience some of you (a small minority I may say) may have experienced these last few days.
To address some questions, it is clearly said in the Blitz! info page that the IGI limit for Blitz! project is 300 MB, no surprised there. Merging IGIs can take a while, and we cannot authorize a free project to use, say, a 5-minute render time + a 15 minutes merging time... Limiting the size to 300 MB ensures that the merging won't take more than a few minutes. And it is easy to respect this size limit by reducing the resolution and/or the number of layers, without having to change the complexity of the scene itself.
As you have noticed, Blitz! projects are free, and I don't think it would be reasonable to expect priority support for them. The Blitz! is not mentioned is the guide because it is not a permanent formula. It will work until February 28 only. Blitz! projects are there to help people discover what the RANCH can do for them without paying anything, but this is not something that we can do on a permanent basis, as they cost us time and money, and we can't afford to lose too much in the process.
All the current invalid "inprogress" projects have been marked invalid. This is not an automated procedure as there are many many ways a project can be invalid and we prefer to check things out before marking them.
I am glad to see that a lot of projects went well. Complete automatisation of the renderfarming process is difficult to achieve, particularly when dealing simultaneously with many different software packages, each with their own particularities, needs, bugs, etc

There are also a lot of ways to break a project, and users tend to find them all

it means that we must find automated ways to catch them all (or most of them), and it is a very complex and time-consuming process.
Cheers,
Fred