Dear Roozbeh,
First of all I have to thank you for the great  work made with Adonis.
I am experiencing some convergence problems in analysing tieback retained walls. After a run in which convergence has been reached, a new program run of the already converged model shows a residual force of the same order of magnitude of the initial one and converges to a new solution with greater displacements and lower tieback forces.
Have you experienced a similar problem?

Hi, no I did not experience anything like this.

I went back and looked at the formulation and kind of suspected why that might happen. Based on my suspicion, I made some modification in the code. Please download the latest version that uploaded today and let me know whether you still see the same issue.

Roozbeh

Fixed !
Thank you.