I open the THS website, I am logged in, and I make a search for sits. I click at an interesting sit. It automatically opens on a new page. Where I am signed out. I sign in. It redirects me to the main page. I search the sit again. I click it. It automatically opens on a new page. Where I am signed out. Forever. I can not apply for the sits, as there is no way for me to be signed in on the page of the sit.
More money = worse quality.
It’s working totally fine for me, so you may have a tech issue. Your “more money = worse quality” is a little strange given you don’t mention even contacting the support team as yet to give them a chance to fix your tech issue. I’ve found the support team really quick to sort the odd tech glitch I’ve had in the past, but if they aren’t aware of your problem then they may not be aware that there’s anything that needs fixing, so raise it with them.
I too get signed out from the app from time to time. By the time l sign back in again on occasions l have missed applying for sits. Another frustrating situation
I did contact the support. I did that over a month ago, when they first introduced the two step log in. Their response was “no can do”. For your pleasure I can do that again, but I would rather not, as it will not result to nothing. It’s not like the money goes to more customer service… How will you compensate for my time once I have indeed contacted the support, and they have indeed not done anything about it? Pay my yearly subscription to prove that you really really love THS and stand behind them?
Hi @ChiaGrowth
Just to let you know that I have passed this across to the relevant team and they have just asked me if you could please confirm which device and browser you are using please.
Thank you.
MacBook Air 2022 (M2), Safari
@ChiaGrowth Thank you for confirming this and I will pass this across to the team now.
@ChiaGrowth I’m not a tech person but I do use a MacBook Air and Safari. Sometimes Safari is the problem for me. Once I move to Chrome and do the same thing (not specifically your situation) the problem is usually resolved. Annoying but it is often a successful fix. Good luck. 
Before resorting to sarcastic misdirection on this forum, I hope you’ve tried all the standard stuff when computer stuff goes wonky: restart your computer, clear your Safari cache, try a different browser (Firefox, Chrome or my preference, Duck Duck Go), verify your OS is up to date, try logging in on any other device, so and so forth. If any of those actions sidesteps your issue (unless it’s an OS version incompatibility (very unlikely)), expecting THS tech support to fix a problem that is your computer’s problem is a big ask. Their technical staff might be able to help because of their superior tech knowledge but every customer expecting IT support from THS (or Amazon or the NYT or …) does not scale.
There is no need to get nasty or aim any anger towards me!
The forum is a friendly place, where everyone tries to help each other.
Look, I can see you only joined the forum less than a month ago, so check out the forum rules, and don’t get narky and direct anger to those that attempt to help based on what your original post said… especially when your post had been up for 3 hours and no-one else had responded at all at the point that I did.
Are you feeling ok?
Not really. Why do you ask?
I’m observant….
Hi @ChiaGrowth
Just to set expectations: most help on this forum comes from your fellow community members, not employees, and the Forum team isn’t able to directly resolve account-specific matters.
We ask that everyone keep interactions respectful and considerate, as people here are giving their time to help where they can.
I recommend following the advice given by members here, while you’re waiting to hear back from the team. 
Jenny
Hi @ChiaGrowth
The team have been back in touch with me and wanted to know if you were using a private window at the time. Also they just want to check whether this is happening for all sits or just some?
Thank you.